CN108276231A - A kind of Soil organic phosphorus fractions modifying agent, preparation method and applications - Google Patents
A kind of Soil organic phosphorus fractions modifying agent, preparation method and applications Download PDFInfo
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- CN108276231A CN108276231A CN201810355971.6A CN201810355971A CN108276231A CN 108276231 A CN108276231 A CN 108276231A CN 201810355971 A CN201810355971 A CN 201810355971A CN 108276231 A CN108276231 A CN 108276231A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
- C05B13/02—Fertilisers produced by pyrogenic processes from phosphatic materials from rock phosphates
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- Organic Chemistry (AREA)
- Soil Sciences (AREA)
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Biotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Fertilizers (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention belongs to technical field of land improvement, a kind of tea garden soil organic fertilizing modifying agent, preparation method and applications are disclosed.The Soil organic phosphorus fractions modifying agent of the present invention includes many kinds of substance such as straw decomposing material, biomass carbon and the cake fertilizer of specific proportioning, it cooperates between each substance, so that the modifying agent of the present invention is rich in the multiple element needed for organic matter and growth of tea plant, fertilizer efficiency lasting stability, improve the soil organism and active organic matter content, to improve soil fertility and quality, achieve the purpose that tealeaves volume increase and quality is promoted to improve.Primary raw material used in the Soil organic phosphorus fractions modifying agent of the present invention not only protects ecological environment both from agricultural production by-product or waste, but also realizes the comprehensive of resource and recycle, and reduces production cost, has higher economic value.
Description
Technical field
The invention belongs to technical field of land improvement, and in particular to a kind of tea garden soil organic fertilizing modifying agent, preparation side
Method and its application.
Background technology
The soil organism refers to the substance that life is derived from soil, including edaphon and soil animal and its secretion
Plant residue and plant secretion object in object and the soil body.The soil organism is the important composition ingredient of solid phase of soil part, although
Its content only accounts for the very small part of soil total amount, but it can hold Zinc fractions, soil fertility, environmental protection and agriculture and forestry
Supervention exhibition etc. suffers from and its important meaning.Red Soils in Southern China tea garden soil is inhibited due to the problems such as soil acidification
The accumulation of the soil organism causes soil organic matter content relatively low, and most of Soils In The Region contents of organic matter are less than 1%, minority
The Red Earth Tea Soil content of organic matter is even less than 0.5%, and the good tea place of stable high yield requires soil organic matter content general
All over more than 1.5%.Therefore, for the tealeaves of acquisition high yield and high quality, it is necessary to improve the Red Earth Tea Soil content of organic matter.
It is to add organic fertilizer in the soil to improve the common method of the Red Earth Tea Soil content of organic matter in the prior art, such as
This, can improve the physicochemical property of soil to a certain extent, improve soil organic matter content, increase soil fertility.However, organic fertilizer
Fertilizer efficiency is slow, and nutrient content is relatively low, it is difficult to meet the needs of entire growth cycle different phase of tea tree is to nutrient.For this purpose, Chinese
Patent document CN104447054A discloses a kind of biological organic special fertilizer for tea, and it includes biological bacterium solution that raw material, which forms, organic
Object, nitrogen-phosphorus-potassium compound fertilizer and trace-element fertilizer, the organic matter are the mixture of grouts, chicken manure or grouts and chicken manure；It is raw
Object bacterium solution is obtained by a variety of strain mixing fermentation cultures.However, the preparation of biological bacterium solution is needed in specific item in this method
It being carried out under part, such as certain bacteriums need individually to carry out inclined-plane culture, and this method needs to use a variety of strains, and in the prior art
General lack of high efficient strain, microorganism resource lacks, and the strain of many producers all utilizes the same bacterial strain, technology to fall behind relatively, raw
It is low and of high cost to produce efficiency.In addition, containing the more Escherichia coli of content, parasite and other harmful levels of pathogens in chicken manure, directly
It is easy to grow crop disease and insect into soil.Meanwhile antibiotic in chicken manure and content of beary metal are often higher, these antibiotic
Microorganism in soil can be killed by entering soil with heavy metal, destroy edaphon system, reduce biological activity of soil.
Invention content
Therefore, the present invention will be intended to provide a kind of Soil organic phosphorus fractions modifying agent and be contained with improving Red Earth Tea Soil organic matter
Amount promotes soil fertility and quality, and then realizes high yield, stable yields, the High-quality Cultivation in tea place.
For this purpose, the present invention provides a kind of Soil organic phosphorus fractions modifying agent, count in parts by weight, raw material composition includes：
10 parts of biomass carbon；
25~100 parts of cake fertilizer；
10~30 parts of straw decomposing material.
Further, the straw decomposing material be by after agricultural crop straw is mixed with straw decomposing inoculant and water again through corruption
It is ripe processing and obtain.
Further, the agricultural crop straw is in peanut stalk, wheat stalk, maize straw, rice straw, rape stalk
One or more.
Further, the biomass carbon is by crushing agricultural crop straw after the lower charing at least 1h of oxygen-free environment
It obtains；The grain size of the biomass carbon is 1~3mm.
Further, the temperature of the charing is 650~750 DEG C.
Further, the cake fertilizer is in rape cake, soya-bean cake, pockmarks cake, cottonseed cake, peanut cake, seeds of a tung oil tree cake, tea seed cake
It is one or more of.
Further, further include 4.5~5.5 parts of synergist.
Further, the synergist includes：
0.25~0.35 part of humic acid；
3.80~4.60 parts of calcium and magnesium phosphorus composite fertilizer；
0.45~0.55 part of wormcast.
The present invention also provides a kind of methods preparing above-mentioned Soil organic phosphorus fractions modifying agent, include the following steps：
The each component of the Soil organic phosphorus fractions modifying agent is sufficiently mixed, and 12~18% water is added, 20~30 DEG C
The aftershaping of lower curing 18~for 24 hours is handled up to the Soil organic phosphorus fractions modifying agent；
Wherein, the straw decomposing material be by the way that the crops stalk crushing is obtained straw powder, by the straw powder with
Straw decomposing material and water are 100 in mass ratio：(0.02~0.08)：(45~50) it mixes, fermentation obtains for 4~7 days.
Further, further include being dried before the forming processes, with the moisture content of control system below 10%.
The present invention also provides above-mentioned Soil organic phosphorus fractions modifying agent or according to Soil organic phosphorus fractions obtained by the above method
Application of the modifying agent in improveing Red Earth Tea Soil.
Further, the Soil organic phosphorus fractions modifying agent can arise from application in October with base manure one, and method of application is
It spreads fertilizer over the fields or ditch spread, preferably ditch spread.Dosage is 750~3000kg/hm2, ditch spread between two row tea trees, ditch depth be 20~
30cm, specific dosage are determined according to soil organic matter content.
When soil organic matter content be less than 0.8% when, the Soil organic phosphorus fractions modifying agent amount of application be 2250~
3000kg/hm2；When soil organic matter content between 0.8~1.5% when, the Soil organic phosphorus fractions modifying agent amount of application is
1200~2250kg/hm2；When soil organic matter content between 1.5~2% when, the Soil organic phosphorus fractions modifying agent amount of application
For 750~1200kg/hm2；When soil organic matter content be more than 2% when, the Soil organic phosphorus fractions modifying agent amount of application be 0~
750kg/hm2。
Technical scheme of the present invention has the following advantages that：
1. Soil organic phosphorus fractions modifying agent provided by the invention, including the straw decomposing material of specific proportioning, biomass carbon and
The many kinds of substance such as cake fertilizer cooperate between each substance so that modifying agent of the invention is rich in needed for organic matter and growth of tea plant
Multiple element, fertilizer efficiency lasting stability are truly realized and are expected with fertilising according to growth of tea plant rule, met in the entire growth cycle of tea tree
Demand of the different phase to nutrient, improves active soil organic matter content, to improve soil fertility and quality, reaches rush
The purpose improved into tealeaves volume increase and quality.Primary raw material is both from agricultural used in the Soil organic phosphorus fractions modifying agent of the present invention
By-product or waste are produced, ecological environment is not only protected, but also realizes the comprehensive of resource and recycles, reduces production cost,
With higher economic value.
2. Soil organic phosphorus fractions modifying agent provided by the invention, the biomass carbon being prepared by specific condition have
Larger porosity and specific surface area has excellent absorption property, all kinds of activity generated in load coupling maturing process
Substance, and these active materials are supplied to tea tree indirectly, meet need of the entire growth cycle different phase of tea tree to nutrient
It asks, its metaboilic level is also improved while growth of tea plant accelerates, and a large amount of tea tree Litter-fall enters soil decomposition laggard one
Step improves soil organic matter content.In addition, the biomass carbon can also improve soil buffer capacity, to improve soil
Anti-acid ability.
3. Soil organic phosphorus fractions modifying agent provided by the invention, the carbon-nitrogen ratio of cake fertilizer used is relatively low, in the soil can be compared with
It is fast to decompose, quickly generate all kinds of nutrients for being conducive to growth of tea plant.
4. Soil organic phosphorus fractions modifying agent provided by the invention, contains humic acid in the synergist, tea tree can be promoted
The growth of root system enhances root activity, and promotes the increase of secondary root, extends so that the nutrient in soil can be by comprehensively fast
The absorption of speed, branching out and blooming and provide enough nutrition assurances for tea tree are also rich in a variety of amino acid and trace element, are complete
The organic fertilizer of face multifunctional；Wormcast in synergist is rich in a variety of organic matters and a large amount of beneficial organism flora, and passes through drop
Decomposed organic material is solved, the good crumb structure of Zinc fractions can be made, while dissolving all kinds of nutrients in activating soil, improves soil
The earth content of organic matter enhances soil fertility, promotes growth of tea plant.
5. the preparation method of Soil organic phosphorus fractions modifying agent provided by the invention, by agricultural crop straw it is decomposed after again with it is other
Component cures, and ensure that coming into full contact with and biomass carbon capable of being made to fully absorb the various nutrients in conversion process for each component
Matter improves the utilization rate of nutriment.The preparation method of the present invention is simple, at low cost, high financial profit, has wide answer
Use foreground.
Specific implementation mode
Technical scheme of the present invention will be clearly and completely described below, it is clear that described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
There is the every other embodiment obtained under the premise of making creative work, shall fall within the protection scope of the present invention.In addition, below
Involved technical characteristic as long as they do not conflict with each other can be mutual in described different embodiments of the present invention
In conjunction with.
Embodiment 1
A kind of Soil organic phosphorus fractions modifying agent is present embodiments provided, raw material composition includes：Biomass carbon 100kg；Dish
Seedcake 650kg；The decomposed material 200kg of peanut stalk；Synergist 50kg.Contain humic acid 3kg, calcium magnesium phosphate wherein in synergist
42kg, wormcast 5kg.
Above-mentioned each component is thoroughly mixed, 150kg water is added, is again stirring for system each component being uniformly mixed, 25
It is cured for 24 hours at DEG C.It dries to moisture content and is reduced to 10%, be put into comminutor and be granulated into graininess, i.e., the described Soil organic phosphorus fractions
Modifying agent.
Wherein：The preparation process of the decomposed material of peanut stalk is specially：Peanut stalk is dried to moisture content and is less than 5%, powder
Be broken to 2~3cm, by peanut stalk powder, saccharomycete and water according to mass ratio be 100:0.05:48 mixing, fermentation obtain described for 6 days
The decomposed material of peanut stalk.
The preparation process of the biomass carbon is specially：The wheat stalk of drying is placed in nitrogen environment, at 700 DEG C
After pyrolysis charring 2h, 2mm is crushed to up to the biomass carbon.
Embodiment 2
A kind of Soil organic phosphorus fractions modifying agent is present embodiments provided, raw material composition includes：Biomass carbon 100kg；Flower
Raw cake 250kg；The decomposed material 300kg of wheat stalk；Synergist 45kg.Contain humic acid 2.5kg, calcium magnesium phosphate wherein in synergist
38kg, wormcast 4.5kg.
Above-mentioned each component is thoroughly mixed, 83.4kg water is added, is again stirring for system each component being uniformly mixed, 30
18h is cured at DEG C.It dries to moisture content and is reduced to 8%, be put into comminutor and be granulated into graininess, i.e., the described Soil organic phosphorus fractions change
Good dose.
Wherein：The preparation process of the decomposed material of wheat stalk is specially：Wheat stalk is dried to moisture content and is less than
5%, be crushed to 2~3cm, by stalk powder, saccharomycete and water according to mass ratio be 100:0.02:45 mixing, fermentation obtain for 7 days
The decomposed material of wheat stalk.
The preparation process of the biomass carbon is specially：The wheat stalk of drying is placed in nitrogen environment, at 750 DEG C
After pyrolysis charring 2h, 1mm is crushed to up to the biomass carbon.
Embodiment 3
A kind of Soil organic phosphorus fractions modifying agent is present embodiments provided, raw material composition includes：Biomass carbon 100kg；Tea
Seedcake 1000kg；The decomposed material 100kg of maize straw；Synergist 55kg.Contain humic acid 3.5kg, calcium and magnesium phosphorus wherein in synergist
Fertile 46kg, wormcast 5.5kg.
Above-mentioned each component is thoroughly mixed, 225.9kg water is added, is again stirring for system each component being uniformly mixed,
It is cured for 24 hours at 25 DEG C.It dries to moisture content and is reduced to 10%, be put into comminutor and be granulated into graininess, i.e., the described organic training of soil
Fertile modifying agent.
Wherein：The preparation process of the decomposed material of maize straw is specially：Maize straw is dried to moisture content and is less than
5%, be crushed to 2~3cm, by stalk powder, saccharomycete and water according to mass ratio be 100:0.08:50 mixing, fermentation obtain for 7 days
The decomposed material of maize straw.
The preparation process of the biomass carbon is specially：The maize straw of drying is placed in nitrogen environment, at 750 DEG C
After pyrolysis charring 1h, 2mm is crushed to up to the biomass carbon.
Embodiment 4
A kind of Soil organic phosphorus fractions modifying agent is present embodiments provided, raw material composition includes：Biomass carbon 100kg；Beans
Cake 650kg；The decomposed material 200kg of rape stalk.
Above-mentioned each component is thoroughly mixed, 140kg water is added, is again stirring for system each component being uniformly mixed, 20
It is cured for 24 hours at DEG C.It dries to moisture content and is reduced to 10%, be put into comminutor and be granulated into graininess, i.e., the described Soil organic phosphorus fractions
Modifying agent.
Wherein：The preparation process of the decomposed material of rape stalk is specially：Rape stalk is dried to moisture content and is less than
5%, be crushed to 2~3cm, by rape stalk powder, saccharomycete and water according to mass ratio be 100:0.05:48 mixing, ferment 5 days
Obtain the decomposed material of the rape stalk.
The preparation process of the biomass carbon is specially：The maize straw of drying is placed in nitrogen environment, at 650 DEG C
After pyrolysis charring 2h, 3mm is crushed to up to the biomass carbon.
Embodiment 5
A kind of Soil organic phosphorus fractions modifying agent is present embodiments provided, raw material composition includes：Biomass carbon 100kg；Dish
Seedcake 500kg；The decomposed material 200kg of peanut stalk；Synergist 50kg.Contain humic acid 3kg, calcium magnesium phosphate wherein in synergist
42kg, wormcast 5kg.
The preparation method is the same as that of Example 1 for above-mentioned Soil organic phosphorus fractions modifying agent.
Experimental example 1
This experiment carries out in Hubei Province Xianning tea place, tea place Planting Years 20 years or so, soil pH value 4.1, soil
The earth content of organic matter 1.10%.3 kinds of test process are set altogether：
(1) not fertilizer treatment；
(2) rape cake used in embodiment 5：Rape cake is spread fertilizer over the fields in mid-October between two row tea trees, and dose is
1750kg/hm2；
(3) the Soil organic phosphorus fractions modifying agent of embodiment 5：Soil organic phosphorus fractions modifying agent is spread fertilizer over the fields in mid-October in two rows
Between tea tree, dose 1750kg/hm2。
7 after, active soil organic matter content is measured within 15,30,30 days respectively (with 333mmol/L KMnO4Oxidation ratio
Color method measures), measurement result see the table below 1.
1 active soil organic matter content of table
Can be seen that by upper table 1, using the present invention Soil organic phosphorus fractions modifying agent after, active soil organic matter content compared with
It is just significantly improved in the short time, after the long period, active soil organic matter content remains to maintain higher level.
Experimental example 2
This experiment carries out in Hubei Province Xianning tea place, tea place Planting Years 20 years or so, soil pH value 4.1, soil
The earth content of organic matter 1.10%.5 kinds of test process are set altogether：
(1) not fertilizer treatment；
(2) straw biomass charcoal used in embodiment 5：The decomposed material of peanut stalk spread fertilizer over the fields in mid-October two row tea trees it
Between, dose 1750kg/hm2；
(3) rape cake used in embodiment 5：Rape cake is spread fertilizer over the fields in mid-October between two row tea trees, and dose is
1750kg/hm2；
(4) the decomposed material of peanut stalk used in embodiment 5：The decomposed material of peanut stalk spread fertilizer over the fields in mid-October two row tea trees it
Between, dose 1750kg/hm2；
(5) the Soil organic phosphorus fractions modifying agent of embodiment 5：Soil organic phosphorus fractions modifying agent is spread fertilizer over the fields in mid-October in two rows
Between tea tree, dose 1750kg/hm2。
Soil organic matter content is measured respectively in the same time of late October next year after fertilising (uses 333mmol/L
KMnO4Aoxidize colorimetric method for determining), and calculate the tealeaves volume increase percentage of every group of experiment.As a result 2 be see the table below.
2 soil organic matter content of table and volume increase percentage
| Experiment process | Soil organic matter content (g/kg) | Increase production (%) |
| 1 | 11.0 | —— |
| 2 | 11.8 | 5.7 |
| 3 | 11.2 | 15.8 |
| 4 | 11.6 | 12.2 |
| 5 | 12.9 | 24.6 |
The Soil organic phosphorus fractions modifying agent of the present invention can significantly improve soil organic matter content it can be seen from upper table 2, and
The volume increase of tealeaves can be remarkably promoted.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (11)
1. a kind of Soil organic phosphorus fractions modifying agent, which is characterized in that count in parts by weight, raw material composition includes：
10 parts of biomass carbon；
25~100 parts of cake fertilizer；
10~30 parts of straw decomposing material.
2. Soil organic phosphorus fractions modifying agent according to claim 1, which is characterized in that the straw decomposing material be pass through by
Agricultural crop straw is obtained through decomposed processing again after being mixed with straw decomposing inoculant and water.
3. Soil organic phosphorus fractions modifying agent according to claim 2, which is characterized in that the agricultural crop straw is peanut
One or more of stalk, wheat stalk, maize straw, rice straw, rape stalk.
4. according to claim 1-3 any one of them Soil organic phosphorus fractions modifying agents, which is characterized in that the biomass carbon is
It is obtained by crushing agricultural crop straw after the lower charing at least 1h of oxygen-free environment；The grain size of the biomass carbon be 1~
3mm。
5. Soil organic phosphorus fractions modifying agent according to claim 4, which is characterized in that the temperature of the charing be 650~
750℃。
6. according to claim 1-5 any one of them Soil organic phosphorus fractions modifying agents, which is characterized in that the cake fertilizer is vegetable seed
One or more of cake, soya-bean cake, pockmarks cake, cottonseed cake, peanut cake, seeds of a tung oil tree cake, tea seed cake.
7. according to claim 1-6 any one of them Soil organic phosphorus fractions modifying agents, which is characterized in that further include synergist
4.5~5.5 parts.
8. Soil organic phosphorus fractions modifying agent according to claim 7, which is characterized in that the synergist includes：
0.25~0.35 part of humic acid；
3.80~4.60 parts of calcium and magnesium phosphorus composite fertilizer；
0.45~0.55 part of wormcast.
9. a kind of method preparing claim 1-8 any one of them Soil organic phosphorus fractions modifying agents, which is characterized in that including
Following steps：
The each component of the Soil organic phosphorus fractions modifying agent is sufficiently mixed, and 12~18% water is added, it is ripe at 20~30 DEG C
Change 18~for 24 hours aftershaping handle up to the Soil organic phosphorus fractions modifying agent；
Wherein, the straw decomposing material is by the way that the crops stalk crushing is obtained straw powder, by the straw powder and stalk
Decomposed material and water are 100 in mass ratio：(0.02~0.08)：(45~50) it mixes, fermentation obtains for 4~7 days.
10. according to the method described in claim 9, it is characterized in that, further including being dried before the forming processes, with control
The moisture content of system is below 10%.
11. claim 1-8 any one of them Soil organic phosphorus fractions modifying agents or method according to claim 9 or 10
Application of the obtained Soil organic phosphorus fractions modifying agent in improveing Red Earth Tea Soil.
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| CN109942323A (en) * | 2019-05-09 | 2019-06-28 | 浙江农林大学 | A kind of Chinese torreya timbered soil is loose and carburetting conditioner |
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| CN111978118A (en) * | 2020-08-18 | 2020-11-24 | 贵州大学 | Preparation and application methods of tea garden biomass carbon rod organic fertilizer |
| CN112514589A (en) * | 2020-12-01 | 2021-03-19 | 九江学院 | Method for improving tea garden soil quality by using biomass charcoal |
| CN112514588A (en) * | 2020-12-01 | 2021-03-19 | 九江学院 | Method for improving soil fertility of tea garden by using biomass charcoal |
| CN112840935A (en) * | 2020-12-31 | 2021-05-28 | 九江学院 | Method for improving tea garden soil health by using biomass charcoal |
| CN113603534A (en) * | 2021-08-18 | 2021-11-05 | 黑龙江奥创生物科技发展有限公司 | Preparation method of wormcast fertilizer |
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