CN115589894A - Method for regulating and controlling micro-ecology of soil in walnut field - Google Patents
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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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
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/60—Flowers; Ornamental plants
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- Life Sciences & Earth Sciences (AREA)
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- Botany (AREA)
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- Cultivation Of Plants (AREA)
Abstract
The invention discloses a method for regulating and controlling micro-ecology of soil in a walnut field, and belongs to the technical field of soil improvement. The method of the invention comprises the following steps: (1) Fertilizing walnut trees in late 10 months, excavating fertilizing holes radially at a position 30-50cm away from a trunk of each walnut tree, wherein the hole length of each fertilizing hole is 30-40cm, the hole depth is 15-20cm, and covering soil and compacting after fertilizing; (2) clearing and weeding the walnut land in 3 months in the next year; sowing white clover and February in the walnut field in the middle and last ten days of 3 months; (3) And (3) mowing the white clover and the orychophragmus violaceus in the 6 months and the 8 months respectively, and digging and burying the mowed grass in deep holes. According to the invention, through artificially compounding grass of different varieties, adjusting a fertilizing mode and a mowing grass treatment mode, the problems of poor soil structure and poor water retention of the walnut field are solved, and meanwhile, the quality and the yield of walnuts are improved.
Description
Technical Field
The invention relates to the technical field of soil improvement, in particular to a method for regulating and controlling micro-ecology of soil in a walnut field.
Background
Walnut (Juglans regia L.) is an important economic forest tree species in China, and walnut kernel has high nutritional value. The walnut garden soil is the basis of walnut growth, and the yield and quality of walnuts are directly influenced by the fertility of the soil. The walnut orchard in the mountainous area is mainly built on barren mountains, no management is performed before planting, soil deep ploughing is less, a live soil layer is shallow, root system stretching and absorption are affected, and walnuts grow badly and are poor in quality. In addition, the condition of mountain areas is poor, most walnut gardens are not irrigated, rainfall depends on the sky, fertilizer is mainly applied, the amount of trace fertilizer is insufficient, and the physical and chemical properties of soil are poor due to the fact that the fertilizer is applied in successive years, so that soil is hardened, pores are small, water content is reduced, and plant diseases and insect pests are induced. Therefore, the problems of tree body aging, walnut quality reduction, increasingly serious pest and disease damage and the like occur to different degrees in the walnut gardens in mountain areas after fruits are hung for 3-5 years, even withered and dead trees occur, and great economic loss is caused to fruit growers.
The orchard grass growing refers to a soil management mode of planting herbaceous plants as covering crops in fruit tree lines or in a whole garden, the grass growing mode mainly comprises natural grass growing and artificial grass planting, and the natural grass planting generally has stronger adaptability to local climate and saves time and labor; the artificial grass planting is a special variety of grass beneficial to fruit trees. The fruit trees have different grass species and different influences on the soil habitat. However, the grass growing cultivation measures are still in a small-area test and application stage so far, the existing grass growing orchard only occupies less than 20% of the total area of the orchard, and the reason is that the traditional concept of 'weeds competing for fertilizer and water with fruit trees' and the technology of 'grass growing orchard' are immature, so that 'clear ploughing and weeding' are the only options for orchard management. Therefore, the orchard grass growing technology is perfected, the orchard soil management system and the cultivation mode are improved, and the method has important significance for continuous development of walnut orchard industry.
The study on the grass growth in the walnut garden in the prior art comprises the following steps: zhu Dongfang and the like have studied the influence of natural grass on the soil temperature, soil organic matter, main mineral nutrients and nut quality of the walnut garden "xiangling", and found that the natural grass can improve the soil property of the walnut garden and the fat content of walnut fruits ("influence of natural grass on the soil property and nut quality of the walnut garden", shandong forestry science and technology, 2013). Qian Jinfang and the like are provided with 6 treatments of white clover, ryegrass, rape, milk vetch, natural weeds and clear ploughing (contrast), the influence of different grass growing cultivation on the diversity of soil nutrients and microorganisms in hickory lands is researched, and the result shows that: compared with clear ploughing, the condition of soil nutrients can be improved by grass growing cultivation (the influence of grass growing cultivation on the soil nutrients and microbial diversity of hickory forest land, ecological report, 2014). Li Hui and the like research the influence of planting alfalfa among walnut garden lines and in coverage lines after alfalfa is cut on soil physicochemical properties such as soil water content, organic matter, all N, all P, quick-acting N, quick-acting P and the like, and find that planting alfalfa in walnut gardens and covering with alfalfa can effectively improve the soil water content and nutrient content and enhance the soil nutrient supply capacity (the influence of planting alfalfa and alfalfa coverage on the soil properties of walnut gardens, northern horticulture, 2016). Cheng Bin and the like take the soil of a Fenyang walnut orchard as a research object, 6 treatments of soybean, vetch, common vetch, ryegrass, natural grass and clear ploughing are arranged to research the change characteristics of soil nutrients, organic carbon components and enzyme activity of the walnut orchard, and the influence of grass in different orchards on the soil fertility is found to be different (the influence of grass in rows on the soil nutrients, organic carbon components and enzyme activity of the walnut orchard is found, and the soil and the fertilizer are obtained in 2021 years).
The research makes a certain contribution to the soil improvement of the walnut garden, but the artificial grass growing method of the walnut garden mostly adopts a single grass variety, and the influence of a composite grass variety on the soil improvement of the walnut garden is rarely reported.
Disclosure of Invention
Aiming at the prior art, the invention aims to provide a method for regulating and controlling the micro-ecology of the soil of the walnut field. According to the invention, different varieties of grass are artificially compounded to grow grass, the fertilizing mode and the mowing grass treatment mode are adjusted, so that the problems of poor soil structure and poor water retention of the walnut field are solved, and meanwhile, the quality and the yield of walnuts are improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a method for regulating and controlling the micro-ecology of soil in a walnut field, which comprises the following steps:
(1) Fertilizing walnut trees in late 10 months, excavating fertilizing holes radially at a position 30-50cm away from a trunk of each walnut tree, wherein the hole length of each fertilizing hole is 30-40cm, the hole depth is 15-20cm, and covering soil and compacting after fertilizing;
(2) Ploughing and weeding the walnut land in 3 months in the next year; sowing white clover and February in the walnut field in the middle and last ten days of 3 months;
(3) And (3) mowing the white clover and the orychophragmus violaceus in the 6 months and the 8 months respectively, and digging and burying the mowed grass in deep holes.
Preferably, in the step (1), the fertilizing amount is as follows: 14-16 kg/mu of urea, 5-6 kg/mu of controlled release urea with a controlled release period of 60 days, 9-10 kg/mu of controlled release urea with a controlled release period of 90 days and 5-6 kg/mu of diammonium phosphate.
According to the invention, by applying the slow and controlled release fertilizers in different slow release periods, nutrients can be slowly released, the problem of weak soil fertility preservation capability of the walnut field in the mountain area is solved, the non-point source pollution is reduced, and the fertilizer efficiency is improved.
Preferably, in the step (1), 5 fertilizing holes are radially excavated in a position 50cm away from the trunk of each walnut tree.
According to the invention, the fertilizing holes are radially arranged around the walnut tree, so that on one hand, nutrients can be provided around the circumference of the root system of the walnut tree; on the other hand, the nutrient can also be provided for white clover and orychophragmus violaceus sowed among walnut tree rows.
Preferably, in the step (2), the white clover and the orychophragmus violaceus are sowed among walnut tree rows, and the row spacing of the white clover and the orychophragmus violaceus is 20-30cm.
Preferably, in the step (2), the sowing quantity of the white clover and the sowing depth of the orychophragmus violaceus are both 0.75-1.0 kg/mu, and the sowing depth is both 1-2cm.
The sowing amount of the white clover and the orychophragmus violaceus can influence the soil improvement effect, and if the sowing amount is too small, the effects of increasing soil organic matters and fixing nitrogen by organisms are not obvious; if the seeding amount is too large, grass individuals compete with each other, and the grass individuals compete with walnut trees for nutrients. Years of test investigation show that the seeding amount of the white clover and the orychophragmus violaceus is 0.75-1.0 kg/mu, and the effect of improving the walnut field soil is optimal.
The invention selects white clover and orychophragmus violaceus for composite grass generation, and mainly considers the following points:
the orychophragmus violaceus and orychophragmus violaceus belong to leguminous and cruciferous plants, and can integrate the advantages of different plants, wherein the orychophragmus violaceus is high in cold resistance and drought resistance, high in overwintering rate and large in biomass, and is suitable for being used as green manure; the white clover has the function of biological nitrogen fixation, and can reduce the use amount of nitrogen fertilizer.
And the white clover and the orychophragmus violaceus can be sown at the same time, and the height and the depth of main root systems of the white clover and the orychophragmus violaceus are different, so that the influence of the overground part competing for sunlight is avoided.
And thirdly, the white clover and the orychophragmus violaceus can jointly play the functions of improving the soil fertility and preserving water and fertilizer.
Preferably, in the step (2), after the trifolium repens and the orychophragmus violaceus are sown, the method further comprises a step of field management, and other weeds are removed timely.
Preferably, in the step (3), digging a hole with the depth of 20-30cm, and deeply burying the mown grass.
The mown grass is dug and buried deeply, which is equivalent to applying organic fertilizer, meanwhile, the problem that the overground part of the artificial grass is stored everywhere is solved, and meanwhile, the mown grass is buried deeply and returned to the field, so that soil organic matters can be increased.
In a second aspect of the present invention, there is provided a use of the above method in at least one of the following (1) to (3):
(1) The volume weight of the walnut field soil is reduced;
(2) Improving the organic matter content of the soil of the walnut field;
(3) The yield and the quality of walnuts are improved.
The invention has the beneficial effects that:
(1) According to the invention, the white clover and the orychophragmus violaceus are selected for compound grass generation, so that the synergistic effect is achieved, the ground water runoff of a walnut garden in a mountain area is reduced, and the permeability and water storage capacity of soil are enhanced; the volume weight of walnut soil is reduced, and the organic matter content of the walnut soil is improved; meanwhile, the yield and the quality of the walnuts are improved.
(2) The fertilizer application of the walnut adopts the slow and controlled release fertilizer, can slowly release nutrients, solves the problem that the soil of the walnut field is weak in fertilizer retention capacity in general mountainous areas, reduces non-point source pollution and improves fertilizer efficiency.
(3) According to the invention, the fertilizing holes are radially arranged around the walnut trees, so that nutrients can be provided around the circumference of the root systems of the walnut trees; and can also provide nutrients for white clover and orychophragmus violaceus sowed among walnut tree rows.
Description of the drawings:
FIG. 1: the invention discloses a schematic diagram of a fertilizing mode for walnut trees.
FIG. 2: the invention discloses a schematic diagram of sowing white clover and orychophragmus violaceus in walnut fields.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
As mentioned above, most of the walnut gardens in mountainous areas are mainly made of barren mountains, no management is performed before planting, soil is deeply ploughed and is shallow, a living soil layer influences root system extension and absorption, and walnuts are poor in growth and quality. In addition, the condition of mountain areas is poor, most walnut gardens are not irrigated, rainfall depends on the sky, fertilizer is mainly applied, the amount of trace fertilizer is insufficient, and the physical and chemical properties of soil are poor due to the fact that the fertilizer is applied in successive years, so that soil is hardened, pores are small, water content is reduced, and plant diseases and insect pests are induced.
Orchard grass growing is a new soil management mode, natural grass growing or artificial grass growing is mostly adopted in the existing walnut orchard grass growing, but the effect of the natural grass growing is difficult to accurately control; the artificial grass is mostly single grass species, and the improvement effect on the soil of the walnut garden is limited.
Based on the method, the invention provides a novel method for improving soil by using the walnut ground growing grass. The orchard grass growing can change the content of mineral elements in soil, but the effect of grass growing treatment is different. The leguminous plants have the nitrogen fixation effect, so that the net input of soil nitrogen is improved, and the nitrogen content in soil can be obviously improved; the cruciferae plants can improve the content of phosphorus and potassium in the soil, but reduce the content of nitrogen in the soil to a certain extent. The influence of different grass species on the soil fertility of the walnut garden is different. The invention selects and compounds grass seeds which can be used for growing grass in an orchard, and years of experiments show that: the invention provides a method for improving the soil in a walnut garden by selecting white clover and orychophragmus violaceus to carry out artificial composite grass growth, and has remarkable synergistic effect on improvement of the soil in the walnut garden.
In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the technical solutions of the present application will be described in detail below with reference to specific embodiments. If the experimental conditions not specified in the examples are specified, the conditions are generally conventional or recommended by the reagent company; reagents, consumables, and the like used in the following examples are commercially available unless otherwise specified. Wherein:
controlled release urea for a controlled release period of 60 days and a controlled release period of 90 days was purchased from Shandong agricultural and fertilizer science and technology Co.
Example 1: method for improving soil by using walnut and groundsel
The specific method comprises the following steps:
(1) Fertilizing walnut trees in late 10 months, excavating 5 fertilizing holes radially at a position 40cm away from a trunk of each walnut tree, wherein the fertilizing holes are 30cm long (shown in figure 1) and 20cm deep; the fertilizing amount is as follows: 16 kg/mu of urea, 6 kg/mu of controlled release urea with a controlled release period of 60 days, 10 kg/mu of controlled release urea with a controlled release period of 90 days and 6 kg/mu of diammonium phosphate; and (5) covering soil and compacting after fertilization.
(2) Ploughing and weeding the walnut land in 3 months in the next year; sowing white clover and February in the walnut field in 3 middle of the month; the white clover and February are sowed among walnut tree rows (figure 2), and the row spacing of the white clover and February is 25cm. The sowing quantity of the white clover and the orychophragmus violaceus is 1.0 kg/mu, and the sowing depth is 2cm. And after the trifolium repens and the orychophragmus violaceus are sowed, field management is carried out, and other weeds are removed in time.
(3) And (3) mowing the white clover and the orychophragmus violaceus in the 6 months and the 8 months respectively, excavating holes with the depth of 30cm, and deeply burying the mowed grass.
Comparative example 1: method for improving soil by using walnut and groundsel
The specific method comprises the following steps:
(1) Fertilizing walnut trees in late 10 months, excavating 5 fertilizing holes radially at a position 40cm away from a trunk of each walnut tree, wherein the fertilizing holes are 30cm long (shown in figure 1) and 20cm deep; the fertilizing amount is as follows: 16 kg/mu of urea, 6 kg/mu of controlled release urea with a controlled release period of 60 days, 10 kg/mu of controlled release urea with a controlled release period of 90 days and 6 kg/mu of diammonium phosphate; and (5) covering soil and compacting after fertilization.
(2) Ploughing and weeding the walnut land in 3 months in the next year; sowing white clover in the walnut field in 3 middle-month ten-days; the white clover is sowed among walnut tree rows with the row spacing of 25cm. The sowing quantity of the white clover is 1.0 kg/mu, and the sowing depth is 2cm. And (4) after sowing the white clover, performing field management and timely removing other weeds.
(3) The white clover is mowed in 6 and 8 months respectively, holes with the depth of 30cm are dug, and the mowed grass is deeply buried.
Comparative example 2: method for improving soil by using walnut and groundsel
The specific method comprises the following steps:
(1) Fertilizing walnut trees in late 10 months, excavating 5 fertilizing holes radially at a position 40cm away from a trunk of each walnut tree, wherein the fertilizing holes are 30cm in length (shown in figure 1) and 20cm in depth; the fertilizing amount is as follows: 16 kg/mu of urea, 6 kg/mu of controlled release urea with a controlled release period of 60 days, 10 kg/mu of controlled release urea with a controlled release period of 90 days and 6 kg/mu of diammonium phosphate; and (5) covering soil and compacting after fertilization.
(2) Ploughing and weeding the walnut land in 3 months in the next year; and sowing February in the walnut field in 3 middle of the month; the February is sowed among walnut tree rows, and the row spacing is 25cm. The sowing quantity of the orychophragmus violaceus is 1.0 kg/mu, and the sowing depth is 2cm. And (4) after the orychophragmus violaceus is sowed, performing field management, and removing other weeds in time.
(3) And (4) mowing the orychophragmus violaceus in the 6 th month and the 8 th month respectively, excavating a hole with the depth of 30cm, and deeply burying the mowed grass.
Application example:
the test is carried out in the walnut planting area in hilly mountain in east-Ping county of Taian city, shandong province. Before the test, the physical and chemical properties of the soil in the walnut planting area are detected, and the results are shown in table 1.
Table 1: soil physicochemical properties of the peach planting area before testing
5 processing areas are selected from the walnut planting areas, walnut trees in the processing areas are all 5 years old, and the number and the growth vigor of the walnut trees are not obviously different and have comparability.
The 5 processing areas are respectively processed as follows:
treatment 1: soil improvement treatment was performed by the method of example 1;
and (3) treatment 2: soil improvement treatment was carried out by the method of comparative example 1;
and (3) treatment: soil improvement treatment was carried out by the method of comparative example 2;
and (4) treatment: the method for improving the soil by adopting the natural grass growing method comprises the following steps: no seeding is carried out, and the field weeds are not treated; the walnut tree fertilizing method is the same as the example 1;
and (4) treatment 5: clear farming was used as a control, i.e.: removing field weeds regularly without seeding; the walnut tree fertilization method was the same as in example 1.
The other field management modes of the above 5 treatments were kept consistent. Harvesting walnuts in 9 months, and counting the fruiting rate and kernel-producing rate of the walnuts;
the yield is not larger than (= (wet weight of peeled fruit/mass of Chinese olive) × 100%;
kernel extraction rate = (kernel mass/nut mass) × 100%.
And the volume weight and the organic matter content of the soil after the walnuts are harvested are measured, and the method specifically comprises the following steps:
1. and (3) soil volume weight determination: ring knife method
1. The preparation work is that vaseline is coated on the inner wall of the cutting ring in a thin layer, a certain number of aluminum boxes are prepared at the same time, the aluminum boxes are numbered one by one, and the weight of the aluminum boxes (accurately to 0.1G) is weighed and recorded as G0.
2. Sampling: selecting a sampling point in a field, excavating a soil profile, stably driving a cutting ring into the middle of a sampling layer, excavating soil around the cutting ring by using a shovel after the cutting ring completely enters the soil, taking out the cutting ring, carefully removing a cutting ring support at the upper end of the cutting ring, and then flattening the soil at two ends of the cutting ring by using a cutting knife so as to ensure that the volume of the soil in the cutting ring is constant. During sampling, each operation step needs to be careful to ensure that the soil in the cutting ring is not disturbed, and if the soil in the cutting ring is deficient or loosened, collected soil samples should be discarded and collected again.
3. Drying: carefully transferring all collected soil samples in the cutting ring to an aluminum box with known weight, and weighing the aluminum box and the fresh soil samples, wherein the weight is marked as G1. The sample was taken back indoors, dried in an oven at 105 ℃ to constant weight, and the weight of the dried soil and the aluminum box was weighed and recorded as G2.
And (4) calculating a result:
in the formula: pi-circumference ratio, r-inner radius (cm) of the cutting ring, h-height (cm) of the cutting ring, G2-weight of dry soil plus weight (G) of an aluminum box, and G0-weight (G) of the aluminum box.
2. Organic matter determination: volumetric method of potassium dichromate
The determination step comprises:
1. accurately weighed on an analytical balance through a 60 mesh screen: (<0.25 mm) soil sample 0.1-0.5g (to an accuracy of 0.0001 g), pouring all weighed samples into a dry hard test tube by using a long strip of wax paper, and slowly and accurately adding 0.136mol/L potassium dichromate-sulfuric acid (K) by using a pipette 2 Cr 2 O 7 -H 2 SO 4 ) 10ml of solution, (when about 3ml was added, the tube was shaken to disperse the soil) and then a small funnel was added to the mouth of the tube.
2. Heating liquid paraffin oil or plant oil bath to 185-190 deg.C, placing the test tube in an iron wire cage, placing the iron wire cage in the oil bath, heating, controlling the temperature at 170-180 deg.C, starting timing when the liquid in the test tube boils and generates bubbles, boiling for 5 min, taking out the test tube, cooling slightly, and wiping off the oil outside the test tube.
3. After cooling, the contents of the test tube are carefully and carefully washed all over into a 250ml Erlenmeyer flask to a total volume of 60-70ml, maintaining a sulphuric acid concentration of 1-1.5mol/L, at which point the solution should be orange-yellow or light yellow in colour. Then adding 3-4 drops of indicator of o-coffee Luo Lin, adding 0.2mol/L standard ferrous sulfate (FeSO) 4 ) And titrating the solution, wherein the end point is obtained when the solution is changed from yellow to brownish red through green and light green mutation.
4. Two blank tests must be made while the sample is being measured, and the average value is taken. The sample can be replaced by quartz sand, and the other processes are the same as above.
And (4) calculating a result:
in the formula: v 0 Volume (ml) of ferrous sulfate used for titration of blank liquid, V-volume (ml) of ferrous sulfate used for titration of sample liquidVolume of ferrous sulfate (ml), N-standard ferrous sulfate concentration (mol/L).
The results are shown in Table 2.
Table 2: results of measurements of different treatments
The above results show that: by adopting the method for regulating and controlling the micro-ecology of the walnut field soil, the quality of the walnut field soil can be obviously improved, and the yield and the quality of walnuts can be improved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. The method for regulating and controlling the micro-ecology of the soil of the walnut field is characterized by comprising the following steps of:
(1) Fertilizing walnut trees in late 10 months, excavating fertilizing holes radially at a position 30-50cm away from a trunk of each walnut tree, wherein the hole length of each fertilizing hole is 30-40cm, the hole depth is 15-20cm, and covering soil and compacting after fertilizing;
(2) Ploughing and weeding the walnut land in 3 months in the next year; sowing white clover and February in the walnut field in the middle and last ten days of 3 months;
(3) And (3) mowing the white clover and the orychophragmus violaceus in the 6 months and the 8 months respectively, and digging and burying the mowed grass in deep holes.
2. The method according to claim 1, wherein in the step (1), the fertilizing amount of the walnut trees is as follows: 14-16 kg/mu of urea, 5-6 kg/mu of controlled release urea with a controlled release period of 60 days, 9-10 kg/mu of controlled release urea with a controlled release period of 90 days and 5-6 kg/mu of diammonium phosphate.
3. The method according to claim 1, wherein in step (1), 5 fertilizing holes are radially dug in each walnut tree at a distance of 40cm from the trunk.
4. The method according to claim 1, wherein in step (2), the white clover and the February are sowed between walnut tree rows, and the row spacing of the white clover and the February is 20-30cm.
5. The method according to claim 4, wherein the sowing amount of white clover and orychophragmus violaceus is 0.75-1.0 kg/mu, and the sowing depth is 1-2cm.
6. The method according to claim 1, wherein in the step (2), after the trifolium repens and the orychophragmus violaceus are sown, the method further comprises a step of field management, and other weeds are removed in time.
7. The method according to claim 1, wherein in step (3), a hole with a depth of 20-30cm is dug, and the mown grass is buried deeply.
8. Use of the method of any one of claims 1 to 7 in at least one of the following (1) to (3):
(1) The volume weight of the walnut soil is reduced;
(2) Improving the organic matter content of the soil of the walnut field;
(3) The yield and the quality of walnuts are improved.
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Citations (4)
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| CN103814743A (en) * | 2014-03-10 | 2014-05-28 | 北京农学院 | Method for improving soil nutrition of organic orchard |
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| BE1029210A1 (en) * | 2022-05-18 | 2022-10-11 | Univ Nanjing Forestry | High Yield Thin Shell Pecan Cultivation Method |
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| CN103814743A (en) * | 2014-03-10 | 2014-05-28 | 北京农学院 | Method for improving soil nutrition of organic orchard |
| CN109121629A (en) * | 2018-08-31 | 2019-01-04 | 山西省农业科学院农业环境与资源研究所 | Northern orchard ecology conserves improvement of soil fertility method |
| BE1029210A1 (en) * | 2022-05-18 | 2022-10-11 | Univ Nanjing Forestry | High Yield Thin Shell Pecan Cultivation Method |
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