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CN117511553A - Soil conditioner for promoting growth of capsicum and preparation method thereof - Google Patents

Soil conditioner for promoting growth of capsicum and preparation method thereof Download PDF

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Publication number
CN117511553A
CN117511553A CN202311490099.3A CN202311490099A CN117511553A CN 117511553 A CN117511553 A CN 117511553A CN 202311490099 A CN202311490099 A CN 202311490099A CN 117511553 A CN117511553 A CN 117511553A
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soil
soil conditioner
growth
parts
promoting
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卢维宏
王要芳
刘杰云
邱虎森
张海洋
刘娜
荚俊飞
郭智妍
符浩
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Suzhou University
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    • C12N1/00Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
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    • C12R2001/00Microorganisms ; Processes using microorganisms
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    • C12R2001/28Micrococcus glutamicus ; Corynebacterium glutamicum
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Abstract

The invention relates to the technical field of soil improvement materials, in particular to a soil conditioner for promoting the growth of capsicum and a preparation method thereof, wherein the soil conditioner mainly comprises the following raw materials in parts by weight: 20-35 parts of microbial preparation, 80-100 parts of corn stalk powder, 10-15 parts of water storage particles, 4-8 parts of flavin enzyme preparation, 5-10 parts of adhesive, 2-5 parts of trehalose and 15-20 parts of nutritional agent. The invention also provides a preparation method of the soil conditioner, the prepared soil conditioner can effectively reduce the salt alkalinity of soil, improve the soil fertility, simultaneously has the functions of storing water and improving the air permeability of the soil, provides a proper soil environment for the growth of crops, promotes the growth of crops and improves the yield.

Description

Soil conditioner for promoting growth of capsicum and preparation method thereof
Technical Field
The invention relates to the technical field of soil improvement materials, in particular to a soil conditioner for promoting pepper growth and a preparation method thereof.
Background
The soil condition of pepper cultivation is an important factor for influencing pepper growth and determining pepper yield, common soil problems include insufficient fertility, insufficient nutrient supply, soil salinization, soil hardening, poor soil air permeability, soil diseases and insect pests and the like, and the factors can influence pepper growth to reduce the yield. The soil conditioner has the functions of improving soil, increasing crop yield and the like, and is a common soil improvement material in agriculture. Currently, there are two main types of soil conditioners commonly used in the market: one is to repair soil by using chemical substances, and to reduce the saline-alkali components in the soil by using the reaction of chemical reagents and the chemical substances in the soil; the other is to use microorganism to repair, which mainly uses a large amount of organic acid generated in the physiological activity of microorganism, can reduce the pH value of saline-alkali soil, and can change the saline-alkali components in soil, thereby reducing the saline-alkali amount. However, the chemical soil conditioner has quick response, good short-term effect, high cost, difficult removal of the chemical reagent after entering the soil, possibility of secondary pollution and high potential risk; the microbial conditioner has long action time, slow effect, poor short-term economic benefit and difficult popularization. In addition, the common soil conditioner is mainly used for salinization of soil, and has little research on soil problems such as soil diseases and insect pests, poor soil air permeability and the like, so that how to develop an efficient and environment-friendly multifunctional soil conditioner is a technical problem to be solved.
Disclosure of Invention
Aiming at the technical problems, the invention provides a soil conditioner for promoting the growth of capsicum and a preparation method thereof, wherein the soil conditioner comprises water storage particles, which can absorb redundant moisture in soil and store the moisture, and the water storage particles contain a large number of micropore structures, so that the hardening of the soil can be improved, and the air permeability of the soil can be enhanced; the microbial preparation is added, and a plurality of microorganisms are synergistic, so that the soil fertility can be obviously improved, the soil salt alkalinity can be reduced, and the effects of resisting diseases and insect pests can be achieved; the flavin enzyme preparation can be synergistic with a microbial preparation to further improve the soil improvement effect of the soil conditioner, improve the efficiency, promote the growth of capsicum and improve the yield.
The invention is realized by the following technical scheme:
the soil conditioner for promoting the growth of the peppers comprises the following raw materials in parts by weight: 20-35 parts of microbial preparation, 80-100 parts of corn stalk powder, 10-15 parts of water storage particles, 4-8 parts of flavin enzyme preparation, 5-10 parts of adhesive, 2-5 parts of trehalose and 15-20 parts of nutritional agent.
Further, the microbial preparation includes Lactobacillus brevis, bifidobacterium longum, cladosporium pantothenicum and Corynebacterium glutamicum strains.
Further, the corn stalk powder is 40-50 meshes.
Further, the adhesive is one or more of bentonite, polyvinyl alcohol and alpha starch.
Further, the nutrient is prepared by mixing yeast extract, peptone and amino acid according to a mass ratio of 1:2:1.
The invention also provides a preparation method of the soil conditioner for promoting the growth of the capsicum, which comprises the following steps:
s1: uniformly mixing a microbial preparation, corn stalk powder, a flavin enzyme preparation, a 3/5 binding agent, trehalose and a nutritional agent, feeding into a disc granulator, granulating into balls, drying at 30 ℃ to 3-4 h, cooling to room temperature, and screening to obtain active particles with the particle size of 2-4 mm;
s2: and (2) adding the water storage particles into a spray nozzle hopper, adding the active particles prepared in the step (S1) into a disc flocking machine, coating the residual adhesive on the surfaces of the active particles under a rotating condition, starting a spray nozzle to spray the water storage particles on the surfaces of the active particles after coating, drying at 30 ℃ for 1-1.5 and h, cooling to room temperature, and screening to obtain the soil conditioner with the particle size of 6-8 mm for promoting the growth of the peppers.
Further, the preparation method of the water storage particles in the step S2 comprises the following steps:
(1) Ball milling a porous material, sieving with a 200-300 mesh sieve, mixing with aluminum chloride and magnesium sulfate according to a mass ratio of 7:1:1, placing in a conical flask, adding water, stirring to dissolve, adjusting pH to 7.2-7.8 with 1mol/L sodium hydroxide solution, oscillating by a shaker for 10-h, standing for 20-30 min, drying to constant weight, placing in a crucible, and calcining at 350-450 ℃ for 5-6 h to obtain a first modified material;
(2) Mixing the first modified material prepared in the step (1) with lauroyl chloride according to the mass ratio of 1:1, adding into a reaction kettle, adding deionized water with the mass ratio of 4:1 to the first modified material, stirring at 35 ℃ for 12-14 h, adding succinic anhydride with the mass ratio of 1:5 to the lauroyl chloride, and continuing stirring for 2-3 h to obtain a mixed solution;
(3) And (3) drying the mixed solution obtained in the step (2) at 60 ℃ for 14-16 h, washing with acetone, drying, ball-milling, and sieving with a 500-600 mesh sieve to obtain water storage particles.
Further, the porous material comprises one or more of zeolite and sepiolite.
Further, the preparation method of the microbial preparation in the step S1 comprises the following steps:
I. inoculating Lactobacillus brevis, bifidobacterium longum, cladosporium pantothenicum and Corynebacterium glutamicum strain into LB liquid medium respectively, shake culturing at 30deg.C for 20-24 h to obtain inoculating solution;
II, inoculating the inoculating liquid obtained in the step I into an LB liquid culture medium according to the volume percentage of 2-5%, and shake culturing at 30 ℃ for 12-16 h to obtain seed liquid;
and III, inoculating the seed liquid obtained in the step II and a fermentation medium into a fermentation tank containing the fermentation medium according to the volume percentage of 1-2% for fermentation to obtain fermentation liquid, mixing the obtained fermentation liquid of lactobacillus brevis, bifidobacterium longum, bacillus thuringiensis and corynebacterium glutamicum according to the volume percentage of 4:3:1:2, centrifuging, freeze-drying the precipitate, and grinding the precipitate into powder to obtain the microbial preparation.
Further, the fermentation medium in the step III comprises 1% of sucrose, 0.02% of yeast extract, 0.05% of ammonium sulfate, 0.01% of magnesium sulfate, 0.01% of potassium chloride, 0.0001% of manganese sulfate, 0.01% of disodium hydrogen phosphate, 0.1% of calcium carbonate and the balance of water.
Further, the Lactobacillus brevis preservation unit is China general microbiological culture collection center, and the preservation number is CGMCC No.11758; the bifidobacterium longum preservation unit is China general microbiological culture collection center CGMCC No.23905; the preservation unit of the bacillus pantothenicum is China center for type culture collection (CCTCC AB 92072); the preservation unit of the corynebacterium glutamicum is China general microbiological culture collection center, the preservation number is CGMCC 1.15647, and the strains are disclosed strains.
Further, the fermentation condition of the fermentation tank in the step III is that the culture temperature is 28-32 ℃, the aeration rate is 1:1.5, the stirring speed is 300rpm, and the culture time is 30-35 h.
Compared with the prior art, the invention has the following beneficial effects:
the soil conditioner for promoting the growth of the capsicum prepared by the invention is added with the ingredients comprising short ingredientsMicrobial preparations of lactobacillus, bifidobacterium longum, bacillus thuringiensis and corynebacterium glutamicum strains, derivatives produced by microbial metabolism can improve the nutrient content of soil, enhance the fertility of soil, activate indissolvable elements of saline-alkali soil, improve the nutrient utilization rate, and neutralize OH by organic acid produced in the microbial metabolism process - Effectively reduces the salt alkalinity of soil. The invention utilizes the Lactobacillus brevis, can generate hydrogen peroxide under the conditions of flavinase and oxygen, has the effect of disease and insect resistance, and the riboflavin necessary for the flavinase can be generated by bifidobacterium longum, so that the activity of the flavinase can be improved, the efficiency of generating hydrogen peroxide by the Lactobacillus brevis can be further improved, the effect of disease and insect resistance is enhanced, and the amino acid generated in the metabolic processes of the Bacillus pantothenicum and the Corynebacterium glutamicum can provide nitrogen sources required by the growth of crops and other bacterial groups, promote the growth of the crops and the proliferation of bacterial groups, and promote the soil improvement effect. The zeolite and sepiolite are special in surface structure and are porous materials and have good adsorption and ion exchange properties, and the zeolite and sepiolite are modified to prepare water storage particles, so that the water storage particles are strong in adsorption, the water retention and fertilizer retention capacity of soil can be improved, salt ions can be adsorbed, salt damage can be reduced, the salinization of the soil is improved, the porous structure is beneficial to the formation of soil aggregate structures, the soil hardening is improved, the soil air permeability is enhanced, the improvement of the soil air permeability is more beneficial to the growth of crops, the biological activity of microorganisms can be improved, meanwhile, the water storage particles can adsorb and store excessive moisture in the soil, the damage to the crops caused by the too high water content of the soil is avoided, the water content of the soil can be kept, and the growth of the crops is facilitated. The water storage particles are coated on the surfaces of the active particles comprising microbial preparations through a flocking machine, and the prepared soil conditioner has the effects of effectively improving soil salinization and soil hardening, enhancing soil fertility and air permeability, resisting diseases and insect pests and regulating soil moisture content through the synergistic effect of various microorganisms, enzyme preparations and the water storage particles.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only of the invention and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a graph showing the effect of the soil conditioner for promoting pepper growth on fresh weight of peppers according to examples 1-3 of the present invention;
FIG. 2 is a graph showing the effect of the soil conditioner for promoting pepper growth on the vitamin C content of peppers according to examples 1-3 of the present invention;
FIG. 3 is a graph showing the water retention performance test of the soil conditioner for promoting pepper growth according to examples 1-3 of the present invention;
fig. 4 is a graph showing that the soil conditioner for promoting pepper growth according to examples 1-3 of the present invention improves soil permeability.
Detailed Description
The present invention will be further described in detail with reference to the following specific examples, but the present invention is not limited to the following examples, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.
The chemical reagents related to the invention are purchased through commercial channels, and the strains are all disclosed strains, except for no special description.
Example 1: the embodiment provides a preparation method of a soil conditioner for promoting pepper growth, which mainly comprises the following steps:
preparation of microbial preparation:
I. inoculating Lactobacillus brevis, bifidobacterium longum, cladosporium pantothenicum and Corynebacterium glutamicum strains into LB liquid medium respectively, shake culturing at 30deg.C for 20 h to obtain inoculating solution;
II, inoculating the inoculating liquid obtained in the step I into an LB liquid culture medium according to the volume percentage of 2%, and shake culturing at 30 ℃ for 12 h to obtain seed liquid;
III, inoculating the seed liquid obtained in the step II and a fermentation medium into a fermentation tank containing the fermentation medium according to the volume percentage of 1% for fermentation, wherein the fermentation condition of the fermentation tank is that the culture temperature is 28 ℃, the aeration rate is 1:1.5, the stirring speed is 300rpm, the culture time is 30 h, so as to obtain fermentation liquid, mixing the obtained fermentation liquid of lactobacillus brevis, bifidobacterium longum, bacillus thuringiensis and corynebacterium glutamicum according to the volume ratio of 4:3:1:2, centrifuging, freeze-drying the precipitate, and grinding the precipitate into powder to obtain a microbial preparation;
the fermentation medium in the step III comprises 1% of sucrose, 0.02% of yeast extract, 0.05% of ammonium sulfate, 0.01% of magnesium sulfate, 0.01% of potassium chloride, 0.0001% of manganese sulfate, 0.01% of disodium hydrogen phosphate, 0.1% of calcium carbonate and the balance of water.
Preparation of water storage particles:
(1) Ball milling zeolite, sieving with a 200-mesh sieve, mixing with aluminum chloride and magnesium sulfate according to the mass ratio of 7:1:1, placing in a conical flask, adding water, stirring to dissolve, adjusting the pH to 7.2 with 1mol/L sodium hydroxide solution, oscillating by a shaking table for 10 h, standing for 20 min, drying to constant weight, placing in a crucible, and calcining at 350 ℃ for 5 h to obtain a first modified material;
(2) Mixing the first modified material prepared in the step (1) with lauroyl chloride according to the mass ratio of 1:1, adding into a reaction kettle, adding deionized water with the mass ratio of 4:1 to the first modified material, stirring at 35 ℃ for 12 h, adding succinic anhydride with the mass ratio of 1:5 to the lauroyl chloride, and continuing stirring for 2 h to obtain a mixed solution;
(3) And (3) drying the mixed solution obtained in the step (2) at 60 ℃ for 14 h, washing with acetone, drying, ball-milling, and sieving with a 500-mesh sieve to obtain water storage particles.
Preparation of a soil conditioner for promoting pepper growth:
s1: uniformly mixing 20 g microbial preparation, 80 g corn stalk powder, 4 g flavin enzyme preparation, 3 g bentonite, 2 g trehalose and 15 g nutrient, feeding into a disc granulator, granulating to obtain balls, drying at 30 ℃ to 3 h, cooling to room temperature, and sieving to obtain active particles with particle size of 2 mm;
s2: adding 10 g water storage particles into a spray nozzle hopper, adding the active particles prepared in the step S1 into a disc flocking machine, coating 2 g bentonite on the surfaces of the active particles under a rotating condition, starting a spray nozzle to spray the water storage particles on the surfaces of the active particles after coating, drying at 30 ℃ for 1 h, cooling to room temperature, and screening to obtain the soil conditioner with the particle size of 6 mm for promoting the growth of capsicum;
the corn stalk powder in the step S1 of the embodiment is 40 meshes, and the nutrient is prepared by mixing yeast extract, peptone and amino acid according to the mass ratio of 1:2:1.
Example 2: the embodiment provides a preparation method of a soil conditioner for promoting pepper growth, which mainly comprises the following steps:
preparation of microbial preparation:
I. inoculating Lactobacillus brevis, bifidobacterium longum, cladosporium pantothenicum and Corynebacterium glutamicum strains into LB liquid medium respectively, shake culturing at 30deg.C for 24 h to obtain inoculating solution;
II, inoculating the inoculating liquid obtained in the step I into an LB liquid culture medium according to the proportion of 5% by volume, and shake culturing at 30 ℃ for 16 h to obtain seed liquid;
III, inoculating the seed liquid obtained in the step II and a fermentation medium into a fermentation tank containing the fermentation medium according to the volume percentage of 2% for fermentation, wherein the fermentation condition of the fermentation tank is that the culture temperature is 32 ℃, the aeration rate is 1:1.5, the stirring speed is 300rpm, the culture time is 35 h, so as to obtain fermentation liquid, mixing the obtained fermentation liquid of lactobacillus brevis, bifidobacterium longum, bacillus thuringiensis and corynebacterium glutamicum according to the volume ratio of 4:3:1:2, centrifuging, freeze-drying the precipitate, and grinding the precipitate into powder to obtain a microbial preparation;
the fermentation medium in the step III comprises 1% of sucrose, 0.02% of yeast extract, 0.05% of ammonium sulfate, 0.01% of magnesium sulfate, 0.01% of potassium chloride, 0.0001% of manganese sulfate, 0.01% of disodium hydrogen phosphate, 0.1% of calcium carbonate and the balance of water.
Preparation of water storage particles:
(1) Ball milling sepiolite, sieving with a 200-300 mesh sieve, mixing with aluminum chloride and magnesium sulfate according to a mass ratio of 7:1:1, placing in a conical flask, adding water, stirring to dissolve, adjusting pH to 7.8 with 1mol/L sodium hydroxide solution, shaking 10 h by a shaking table, standing for 30 min, drying to constant weight, placing in a crucible, calcining at 450 ℃ for 6 h, and obtaining a first modified material;
(2) Mixing the first modified material prepared in the step (1) with lauroyl chloride according to the mass ratio of 1:1, adding into a reaction kettle, adding deionized water with the mass ratio of 4:1 to the first modified material, stirring at 35 ℃ for 14 h, adding succinic anhydride with the mass ratio of 1:5 to the lauroyl chloride, and continuing stirring for 3: 3 h to obtain a mixed solution;
(3) And (3) drying the mixed solution obtained in the step (2) at 60 ℃ for 16 h, washing with acetone, drying, ball-milling, and sieving with a 600-mesh sieve to obtain water storage particles.
Preparation of a soil conditioner for promoting pepper growth:
s1: uniformly mixing 35 g microbial preparation, 100 g corn stalk powder, 8 g flavin enzyme preparation, 6 g polyvinyl alcohol, 5 g trehalose and 20 g nutrient, feeding into a disc granulator, granulating to obtain balls, drying at 30 ℃ to 4 h, cooling to room temperature, and sieving to obtain active particles with particle diameter of 4 mm;
s2: adding 15 g water storage particles into a spray nozzle hopper, adding the active particles prepared in the step S1 into a disc flocking machine, coating 4 g polyvinyl alcohol on the surfaces of the active particles under a rotating condition, starting a spray nozzle to spray the water storage particles on the surfaces of the active particles after coating, drying at 30 ℃ for 1.5 h, cooling to room temperature, and screening to obtain the soil conditioner with the particle size of 8 mm for promoting the growth of capsicum;
in the embodiment, the corn stalk powder in the step S1 is 50 meshes, and the nutrient is prepared by mixing yeast extract, peptone and amino acid according to the mass ratio of 1:2:1.
Example 3: the embodiment provides a preparation method of a soil conditioner for promoting pepper growth, which mainly comprises the following steps:
preparation of microbial preparation:
I. inoculating Lactobacillus brevis, bifidobacterium longum, cladosporium pantothenicum and Corynebacterium glutamicum strains into LB liquid medium respectively, shake culturing at 30deg.C for 22 h to obtain inoculating solution;
II, inoculating the inoculating liquid obtained in the step I into an LB liquid culture medium according to the proportion of 3% by volume, and shake culturing at 30 ℃ for 14 h to obtain seed liquid;
III, inoculating the seed liquid obtained in the step II and a fermentation medium into a fermentation tank containing the fermentation medium according to the volume percentage of 1.5%, fermenting under the fermentation conditions of a culture temperature of 30 ℃, an aeration rate of 1:1.5 and a stirring speed of 300rpm for 32-h to obtain a fermentation liquid, mixing the obtained fermentation liquid of lactobacillus brevis, bifidobacterium longum, bacillus pantothenicum and corynebacterium glutamicum according to the volume ratio of 4:3:1:2, centrifuging, freeze-drying the precipitate, and grinding the precipitate into powder to obtain a microbial preparation;
the fermentation medium in the step III comprises 1% of sucrose, 0.02% of yeast extract, 0.05% of ammonium sulfate, 0.01% of magnesium sulfate, 0.01% of potassium chloride, 0.0001% of manganese sulfate, 0.01% of disodium hydrogen phosphate, 0.1% of calcium carbonate and the balance of water.
Preparation of water storage particles:
(1) Mixing zeolite and sepiolite according to the mass ratio of 1:1, ball milling, sieving with a 250 mesh sieve, mixing with aluminum chloride and magnesium sulfate according to the mass ratio of 7:1:1, placing in a conical flask, adding water, stirring to dissolve, adjusting pH to 7.5 with 1mol/L sodium hydroxide solution, oscillating by a shaker for 10 h, standing for 25 min, drying to constant weight, placing in a crucible, calcining at 400 ℃ for 5.5 h, and obtaining a first modified material;
(2) Mixing the first modified material prepared in the step (1) with lauroyl chloride according to the mass ratio of 1:1, adding into a reaction kettle, adding deionized water with the mass ratio of 4:1 to the first modified material, stirring at 35 ℃ to 13 h, adding succinic anhydride with the mass ratio of 1:5 to the lauroyl chloride, and continuing stirring for 2.5 h to obtain a mixed solution;
(3) And (3) drying the mixed solution obtained in the step (2) at 60 ℃ for 15 h, washing with acetone, drying, ball-milling, and sieving with a 550-mesh sieve to obtain water storage particles.
Preparation of a soil conditioner for promoting pepper growth:
s1: uniformly mixing 30 g microbial preparation, 90 g corn stalk powder, 6 g flavin enzyme preparation, 4.8 g alpha starch, 3 g trehalose and 18 g nutrient, feeding into a disc granulator, granulating into balls, drying at 30 ℃ to 3.5 h, cooling to room temperature, and screening to obtain active particles with the particle size of 3 mm;
s2: adding 12 g water storage particles into a spray nozzle hopper, adding the active particles prepared in the step S1 into a disc flocking machine, coating 3.2 g alpha starch on the surfaces of the active particles under a rotating condition, starting a spray nozzle to spray the water storage particles on the surfaces of the active particles after coating, drying at 30 ℃ for 1.2 h, cooling to room temperature, and screening to obtain a soil conditioner with the particle size of 7 mm for promoting pepper growth;
in the embodiment, the corn stalk powder in the step S1 is 45 meshes, and the nutrient is prepared by mixing yeast extract, peptone and amino acid according to the mass ratio of 1:2:1.
Experimental example 1: the soil conditioner for promoting the growth of the peppers is adopted to carry out improvement test on saline-alkali barren lands in Ganzhou city, a land with relatively uniform soil overall condition is selected, the soil conditioner of the embodiment 1-3 is uniformly spread on the soil surface layer before sowing for two months, soil is ploughed for 20-cm, the soil conditioner is uniformly mixed with the soil, the consumption per mu is 100 kg, meanwhile, a CK group adopting a large water flood irrigation mode and a control group which is not treated are arranged, nutrient detection is carried out on soil samples taken two days before sowing, the sowing crop is peppers, the seedling emergence rate is measured two weeks after sowing, the result is shown in the table 1, the result shows that part of salt can be washed off by the large water flood irrigation mode (CK group), the pH value of the soil is reduced, a certain relieving effect on the alkalinity of the soil salt is achieved, and the seedling emergence rate is only 51.03%. After application of the soil conditioner of examples 1-3, the pH and salt content were both significantly reduced, with a maximum of 1.91 and 1.32 pH and a maximum of 69.4% and 54.2% salt content, respectively, compared to the control and CK groups. The emergence effect is remarkable, the emergence rate of the groups of examples 1-3 can reach more than 95%, and the CK group is only about 51.03%. The soil conditioner for promoting the growth of the peppers can effectively improve the salinization of soil and improve the emergence rate of the peppers.
TABLE 1 improvement of soil salinization by soil conditioner
Experimental example 2: 4 potting vessels of 150mm by 125mm (upper caliber by height) were used, each pot containing 1 kg air-dried soil, and the soil conditioner of examples 1 to 3 was applied at a rate of 0.8 g/kg, respectively. Uniformly mixing the soil conditioner with soil, filling into a basin, and watering thoroughly before sowing. The pepper seeds with the sprouted and white color are sown into the pots, and 6 pepper seeds are sown in each pot. The soil is kept moist before seeding until seedling emergence, water is poured once 2-3 days after seedling emergence, and the maximum field water holding capacity is kept at 40%. And (3) thinning out when 2-3 true leaves grow, keeping 2 plants in each pot at a distance of 3-4cm, and watering for 1 time after thinning out the seedlings. After 60 days, the soil was harvested, the stalks of 0.5. 0.5 cm were cut off for each pepper, and the organic matter, the effective nitrogen-phosphorus-potassium content, the biomass of the pepper and the Vitamin C (VC) content of each group of soil were measured, and the results are shown in table 2 and fig. 1-2. The results in Table 2 show that the soil conditioner of examples 1-3 of the present invention is applied to significantly increase the organic matter content of the soil and improve the soil fertility. Compared with the control group, the soil organic matters in the examples 1-3 are increased by 44.17% -51.44%. In addition, the application of the soil conditioner of examples 1-3 significantly increased the available nutrient content of the soil. The results of fig. 1 show that the fresh weight of the peppers in the embodiment 1-3 is more than 1.7 times that of the control group, and the results of fig. 2 show that the content of the vitamin C in the peppers in the embodiment 1-3 is obviously higher than that in the control group, and the content of the vitamin C in the peppers is improved by more than 40% compared with that in the control group, so that the soil conditioner can effectively promote the growth of the peppers.
Table 2 soil nutrient content
Experimental example 3: selecting adjacent lands with similar soil conditions, uniformly spreading the soil conditioner of the examples 1-3 on the soil surface layer, ploughing the soil by 20 cm to ensure that the conditioner is uniformly mixed with the soil, setting a control group without adding the soil conditioner and a CK group with applying equal amount of the Schdanli compound fertilizer, sowing peppers, counting the yield and the occurrence of diseases and insect pests of each group after 90 days, and the results are shown in the table 3, wherein the results in the table 3 show that the occurrence rate of the diseases and insect pests is obviously reduced compared with the control group and the CK group after applying the soil conditioner of the examples 1-3, and the yield of the peppers is higher than that of the control group and the CK group. Pest incidence (%) = number of pest-infected capsicum plants/total capsicum plants. The results in table 3 show that the soil conditioner for promoting the growth of the peppers can reduce the incidence rate of plant diseases and insect pests and improve the yield of the peppers.
TABLE 3 incidence of pests and Capsici fructus yield
Experimental example 4: the soil conditioner of examples 1-3 was taken 5 g each, mixed with 1 kg of soil from the same block, and then added with 20% of water by weight of the soil, thoroughly stirred, while a control group to which no soil conditioner was added and a CK group to which an equal amount of a smith danish compound fertilizer was applied were simultaneously set, each group of samples was weighed, the initial weights were recorded, the soil moisture evaporation experiments were performed under the same conditions (constant temperature 20 ℃) and after 5, 15, 30, 45 and 60 days, each group was weighed, the current weights were recorded, and the moisture loss rate in the soil was calculated, moisture loss rate (%) = (initial weight-current weight)/initial weight, and the results are shown in fig. 3. The results of fig. 3 show that the bio-organic compound fertilizer has good water holding capacity, can delay the loss of soil moisture and can keep the soil moist for a long time.
Experimental example 5: the soil conditioner of examples 1 to 3 was taken to be mixed with 1 kg of the soil taken from the same block, each 5 g was stirred sufficiently, a control group to which no soil conditioner was added and a CK group to which an equal amount of the smith compound fertilizer was applied were simultaneously set, left to stand naturally for 12 months under the same indoor environment (constant temperature 20 ℃ with relative humidity 40% rh), then the volume weight of the soil was measured by a knife-over-loop method, and the porosity of the soil was calculated, and the results are shown in fig. 4. Porosity (%) = (1-volume weight/specific gravity) ×100%, specific gravity referring to the volume actually occupied by the solid particles of soil, typically 2.65 g/cm 3 To calculate. The results of fig. 4 show that the soil conditioner of examples 1-3 significantly reduces the volume weight of soil and increases the porosity of soil compared with the control group and the CK group, which indicates that the soil conditioner for promoting the growth of capsicum can improve the permeability of soil and enhance the air permeability of soil.
In conclusion, the soil conditioner for promoting the growth of the peppers can enhance the soil fertility, improve the salinization of the soil, enhance the air permeability of the soil, create a soil environment suitable for the growth of crops, promote the growth of the crops and improve the yield of the crops.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the invention (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the invention, the steps may be implemented in any order and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The present invention is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present invention should be included in the scope of the present invention.

Claims (10)

1. The soil conditioner for promoting the growth of the peppers is characterized by comprising the following raw materials in parts by weight: 20-35 parts of microbial preparation, 80-100 parts of corn stalk powder, 10-15 parts of water storage particles, 4-8 parts of flavin enzyme preparation, 5-10 parts of adhesive, 2-5 parts of trehalose and 15-20 parts of nutritional agent.
2. A soil conditioner for promoting pepper growth as claimed in claim 1, wherein said microbial preparation comprises lactobacillus brevis, bifidobacterium longum, bacillus thuringiensis and corynebacterium glutamicum strains.
3. A soil conditioner for promoting pepper growth as claimed in claim 2, wherein said corn stalk powder is 40-50 mesh.
4. A soil conditioner for promoting pepper growth as claimed in claim 3, wherein said binder is one or more of bentonite, polyvinyl alcohol, alpha starch.
5. The soil conditioner for promoting pepper growth as claimed in claim 4, wherein said nutrient is a mixture of yeast extract, peptone and amino acid in a mass ratio of 1:2:1.
6. A method for preparing a soil conditioner for promoting pepper growth as claimed in any one of the claims 1-5, comprising the steps of:
s1: uniformly mixing a microbial preparation, corn stalk powder, a flavin enzyme preparation, a 3/5 binding agent, trehalose and a nutritional agent, feeding into a disc granulator, granulating into balls, drying at 30 ℃ to 3-4 h, cooling to room temperature, and screening to obtain active particles with the particle size of 2-4 mm;
s2: and (2) adding the water storage particles into a spray nozzle hopper, adding the active particles prepared in the step (S1) into a disc flocking machine, coating the residual adhesive on the surfaces of the active particles under a rotating condition, starting a spray nozzle to spray the water storage particles on the surfaces of the active particles after coating, drying at 30 ℃ for 1-1.5 and h, cooling to room temperature, and screening to obtain the soil conditioner with the particle size of 6-8 mm for promoting the growth of the peppers.
7. The method for preparing a soil conditioner for promoting pepper growth as claimed in claim 6, wherein the method for preparing the microbial preparation in step S1 comprises the following steps:
I. inoculating Lactobacillus brevis, bifidobacterium longum, cladosporium pantothenicum and Corynebacterium glutamicum strain into LB liquid medium respectively, shake culturing at 30deg.C for 20-24 h to obtain inoculating solution;
II, inoculating the inoculating liquid obtained in the step I into an LB liquid culture medium according to the volume percentage of 2-5%, and shake culturing at 30 ℃ for 12-16 h to obtain seed liquid;
and III, inoculating the seed liquid obtained in the step II and a fermentation medium into a fermentation tank containing the fermentation medium according to the volume percentage of 1-2%, fermenting under the fermentation conditions of 28-32 ℃ of culture temperature, 1:1.5 of ventilation rate and 300rpm of stirring speed, and 30-35 h of culture time to obtain a fermentation liquid, mixing the obtained fermentation liquid of lactobacillus brevis, bifidobacterium longum, bacillus thuringiensis and corynebacterium glutamicum according to the volume ratio of 4:3:1:2, centrifuging, freeze-drying the precipitate, and grinding the precipitate into powder to obtain the microbial preparation.
8. The method for preparing the soil conditioner for promoting the growth of capsicum according to claim 7, wherein the fermentation medium in the step III comprises 1% of sucrose, 0.02% of yeast extract, 0.05% of ammonium sulfate, 0.01% of magnesium sulfate, 0.01% of potassium chloride, 0.0001% of manganese sulfate, 0.01% of disodium hydrogen phosphate, 0.1% of calcium carbonate and the balance of water.
9. The method for preparing soil conditioner for promoting pepper growth as claimed in claim 8, wherein the preparing method of the water storage granule in step S2 comprises the following steps:
(1) Ball milling a porous material, sieving with a 200-300 mesh sieve, mixing with aluminum chloride and magnesium sulfate according to a mass ratio of 7:1:1, placing in a conical flask, adding water, stirring to dissolve, adjusting pH to 7.2-7.8 with 1mol/L sodium hydroxide solution, oscillating by a shaker for 10-h, standing for 20-30 min, drying to constant weight, placing in a crucible, and calcining at 350-450 ℃ for 5-6 h to obtain a first modified material;
(2) Mixing the first modified material prepared in the step (1) with lauroyl chloride according to the mass ratio of 1:1, adding into a reaction kettle, adding deionized water with the mass ratio of 4:1 to the first modified material, stirring at 35 ℃ for 12-14 h, adding succinic anhydride with the mass ratio of 1:5 to the lauroyl chloride, and continuing stirring for 2-3 h to obtain a mixed solution;
(3) And (3) drying the mixed solution obtained in the step (2) at 60 ℃ for 14-16 h, washing with acetone, drying, ball-milling, and sieving with a 500-600 mesh sieve to obtain water storage particles.
10. The method for preparing a soil conditioner for promoting pepper growth as recited in claim 9, wherein said porous material of step (1) comprises one or more of zeolite and sepiolite.
CN202311490099.3A 2023-11-10 2023-11-10 Soil conditioner for promoting growth of capsicum and preparation method thereof Pending CN117511553A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114525218A (en) * 2021-12-30 2022-05-24 美益添生物医药(武汉)有限公司 Bifidobacterium longum, culture method thereof and application thereof in high yield of gamma-aminobutyric acid and 5-hydroxytryptamine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114525218A (en) * 2021-12-30 2022-05-24 美益添生物医药(武汉)有限公司 Bifidobacterium longum, culture method thereof and application thereof in high yield of gamma-aminobutyric acid and 5-hydroxytryptamine
CN114525218B (en) * 2021-12-30 2024-05-07 美益添生物医药(武汉)有限公司 Bifidobacterium longum, culture method thereof and application of bifidobacterium longum in high-yield gamma-aminobutyric acid and 5-hydroxytryptamine

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