Compound microbial fertilizer as well as preparation method and application thereof
By preparing compound microbial fertilizers, the problems of soil quality decline and environmental pollution caused by the use of inorganic fertilizers have been solved, soil structure has been improved, crop yield and quality have been increased, pests and diseases have been reduced, and sustainable agricultural development has been achieved.
Patent Information
- Application Number
- CN202410118491.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2026-04-03
AI Technical Summary
The extensive use of inorganic fertilizers has led to a decline in soil quality, environmental pollution, and a decline in the quality of agricultural products. The use of traditional chemical fertilizers has resulted in soil compaction, pH imbalance, microbial imbalance, and frequent outbreaks of pests and diseases.
The preparation method of compound microbial fertilizer involves fermenting raw materials such as poultry and livestock blood clots, animal offal, sheep manure, chicken manure, and waste fruits and vegetables with fermentation bacteria and microbial strains to prepare a compound microbial stock solution containing Bacillus subtilis and EM bacteria. This stock solution is then mixed with nitrogen fertilizer, phosphorus fertilizer, and potassium fertilizer to form compound microbial fertilizer.
It improves soil structure, regulates pH, enhances soil fertility, prevents root diseases, increases crop yield and quality, and reduces environmental pollution.
Smart Images
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Abstract
Description
Technical Field
[0001] This invention belongs to the field of compound fertilizer technology, and particularly relates to a compound microbial fertilizer, its preparation method and application. Background Technology
[0002] Traditional inorganic fertilizers are still widely used in agriculture. Inorganic fertilizers refer to chemically synthesized fertilizers, commonly including nitrogen, phosphorus, and potassium fertilizers. Inorganic fertilizers have a highly efficient nutrient supply capacity, which can rapidly increase crop yields. Farmers use inorganic fertilizers primarily to meet the nutritional needs of rapidly growing crops, thereby increasing yields and economic benefits.
[0003] However, the extensive use of inorganic fertilizers also presents several problems. First, long-term use can lead to a decline in soil quality. The chemical components in inorganic fertilizers can damage soil structure, reduce its water and fertilizer retention capacity, and thus increase crops' dependence on fertilizers. Second, the use of inorganic fertilizers can cause environmental pollution. The chemicals in inorganic fertilizers can seep into groundwater and water bodies, polluting water quality and negatively impacting the ecological environment. Furthermore, the use of inorganic fertilizers can also lead to a decline in the quality of agricultural products. Long-term use of inorganic fertilizers can cause an imbalance of nutrients in crops, affecting the taste and nutritional value of agricultural products.
[0004] Therefore, the agricultural sector is actively exploring and adopting sustainable fertilization methods to address the problems associated with inorganic fertilizer use and promote sustainable agricultural development. Organic fertilizer is a sustainable fertilization method made from natural organic matter, such as animal manure, plant residues, and compost. Organic fertilizers are rich in organic matter and trace elements, which can improve soil structure, increase soil fertility and water retention capacity, and enhance crop resistance to pests and diseases. Furthermore, the use of organic fertilizers can reduce environmental pollution because they do not contain harmful chemicals and will not pollute water bodies or the ecological environment.
[0005] Besides organic fertilizers, the agricultural sector is also researching and promoting other sustainable fertilization methods. Biofertilizers are a method that utilizes microorganisms or plants to provide nutrients. Biofertilizers can promote soil microbial activity, increase soil organic matter content, and improve soil fertility. Precision fertilization technology is a method of accurately measuring and applying fertilizers according to the needs of crops. Through precision fertilization, farmers can rationally control the amount and timing of fertilizer application based on soil and crop characteristics, avoiding waste and pollution.
[0006] In summary, although inorganic fertilizers are still widely used in agriculture, the agricultural sector is actively exploring and promoting sustainable fertilization methods, such as organic fertilizers, bio-fertilizers, and precision fertilization technologies. These sustainable fertilization methods can not only solve the problems caused by the use of inorganic fertilizers, but also improve the quality and yield of agricultural products, promoting sustainable agricultural development. Long-term application of traditional chemical fertilizers can easily lead to soil compaction and pH imbalance. Excessive use of pesticides, traditional fertilizers, herbicides, hormones, and other chemical agents can drastically reduce the number of soil microorganisms and cause microbial imbalance, reversing the microbial flora and leading to frequent and serious pest and disease outbreaks; resulting in adverse consequences such as soil compaction, soil acidification, decreased soil fertility, and low fertilizer utilization. Summary of the Invention
[0007] The purpose of this invention is to solve the problems of soil compaction, acidification, pests and diseases caused by the application of chemical fertilizers, as well as to improve soil quality, reduce harmful substances, and improve fertility, and to provide a compound microbial fertilizer, its preparation method and application.
[0008] Firstly, a method for preparing a compound microbial fertilizer adopts the following technical solution:
[0009] A method for preparing a compound microbial fertilizer includes the following steps:
[0010] Step (1): Crush poultry and livestock blood clots and animal viscera, add fermentation bacteria, molasses and water to mix and ferment to obtain solution a;
[0011] Step (2): Crush sheep manure, chicken manure, and lignite, add fermentation bacteria and water to mix and ferment, and obtain solution b;
[0012] Step (3): Crush waste apples, waste grapes, waste melons, jujubes, bitter beans, oilseed meal and rice bran, add fermentation bacteria and water to mix and ferment, and obtain solution c;
[0013] Step (4): Crush the eggshells, add vinegar and soak to obtain solution d;
[0014] Step (5): Mix solutions a, b, c, and d, add molasses, Bacillus subtilis, EM bacteria, and Trichoderma harzianum, mix thoroughly, and carry out secondary fermentation to obtain a compound microbial stock solution;
[0015] Step (6): The nitrogen fertilizer, phosphorus fertilizer, potassium fertilizer and the compound microbial stock solution obtained in step (5) are thoroughly stirred to obtain the compound microbial fertilizer.
[0016] Preferably, in step (1), by weight, relative to 100 parts of the poultry and livestock blood clots, the amount of animal offal is 25-35 parts, the amount of fermentation bacteria is 0.2-0.3 parts, the amount of molasses is 5-7 parts, and the amount of water is 600-700 parts; in step (2), by weight, relative to 100 parts of the sheep manure, the amount of chicken manure is 10-20 parts, and the amount of lignite is 10-15 parts. The amount of fermentation bacteria used is 0.1-0.2 parts, and the amount of water used is 800-1000 parts; in step (3), by weight, relative to 100 parts of waste apples, the amount of waste grapes used is 90-100 parts, the amount of waste melons used is 90-100 parts, the amount of jujubes used is 3-4 parts, the amount of bitter beans used is 3-4 parts, the amount of oilseed meal used is 10-20 parts, and the amount of rice bran used is 10-1... 5 parts, the amount of fermentation bacteria is 0.1-0.2 parts, the amount of water is 500-600 parts; in step (4), by weight, relative to 100 parts of vinegar, the amount of eggshell is 10-12 parts; in step (5), by weight, relative to 100 parts of solution a, the amount of solution b is 90-100 parts, the amount of solution c is 90-100 parts, and the amount of solution d is 0.8-1 parts. The amount of molasses is 3-4 parts, the amount of Bacillus subtilis is 0.6-0.8 parts, the amount of EM bacteria is 0.3-0.4 parts, and the amount of Trichoderma harzianum is 0.25-0.45 parts; in step (6), by weight, relative to 100 parts of the compound microbial stock solution, the amount of nitrogen fertilizer is 5.4-5.8 parts, the amount of phosphate fertilizer is 3-3.5 parts, and the amount of potassium fertilizer is 3.3-3.8 parts.
[0017] Furthermore, in steps (1) to (3), the fermentation temperature is 15-35℃; in steps (1) to (2), the fermentation time is 15-20 days; in step (3), the fermentation time is 10-15 days.
[0018] Furthermore, in steps (1) to (3), the mixture is stirred once every 4-4.5 hours during the fermentation process, and each stirring lasts for 0.5-1 hours.
[0019] Furthermore, the operating environment temperature for steps (4) and (6) is 15-35℃.
[0020] Furthermore, in step (4), the soaking time is 20-30 days.
[0021] Furthermore, in step (5), the secondary fermentation process is aerated once every 4-4.5 hours, with each aeration lasting 0.5-1 hour; the secondary fermentation time is 7-10 days.
[0022] Secondly, a compound microbial fertilizer adopts the following technical solution:
[0023] A compound microbial fertilizer is prepared using any of the above-described methods for preparing compound microbial fertilizers.
[0024] Thirdly, the application of a compound microbial fertilizer adopts the following technical solution:
[0025] An application of a compound microbial fertilizer, wherein the compound microbial fertilizer is applied to the fertilization of melons, fruits, vegetables, cash crops, and field crops.
[0026] Preferably, the dosage of the compound microbial fertilizer is as follows: 6-9 kg / mu per drip irrigation during the seedling stage, 9-12 kg / mu per drip irrigation during the flowering stage, and 12-15 kg / mu per drip irrigation during the fruiting stage.
[0027] Alternatively, dilute 500-700 times for foliar spraying.
[0028] The beneficial effects of this invention are:
[0029] The present invention provides a compound microbial fertilizer that, when applied to the soil, can not only decompose organic and inorganic matter, but also synthesize a large amount of organic matter in the form of microbial protein, enriching soil nutrients. It can also secrete a large amount of organic acids such as citric acid, malic acid, and tartaric acid to coordinate the soil pH value, keeping the soil pH value always within the neutral range suitable for crop growth, and strengthening the soil buffering capacity.
[0030] The compound microbial fertilizer provided by this invention has the characteristics of preventing and controlling root diseases such as wilt, verticillium wilt, damping-off, Phytophthora root rot, and Pythium root rot. After application, it can improve soil and diseases, as well as improve crop quality, increase yield, increase sugar content, and extend storage time.
[0031] The compound microbial fertilizer provided by this invention contains soil-improving bacteria, including Bacillus subtilis: inhibiting the reproduction of pathogens in the soil and their invasion of plant roots, reducing soil-borne plant diseases; having a remediation effect on soil pollution, and can also remediate pesticide-contaminated soil, herbicide-contaminated soil, and heavy metal-contaminated soil; EM bacteria: EM bacteria stock solution can decompose lignin, crude fiber and other large molecular organic matter, converting them into small molecular substances that are easy for plants to absorb; EM bacteria stock solution can secrete and synthesize organic acids, various enzymes and physiologically active substances, improving fertilizer efficiency. Detailed Implementation
[0032] The following detailed description, in conjunction with embodiments, illustrates the compound microbial fertilizer, its preparation method, and its application according to the present invention. For the sake of simplicity, this document cannot exhaustively list all alternative technical features and embodiments included in the present invention. Therefore, those skilled in the art should understand that any technical feature and embodiment within this embodiment does not limit the scope of protection of the present invention. The scope of protection includes all alternative technical features and embodiments adopted by those skilled in the art without inventive effort. Specifically, any embodiment obtained by replacing any technical feature in the present invention or by combining any two or more technical features provided by the present invention should be within the scope of protection of the present invention.
[0033] Unless otherwise specified in the embodiments, the techniques and conditions described in the literature in this field or the product instructions shall be followed. If the manufacturers of the reagents or instruments used are not specified, they are all conventional products that can be purchased commercially.
[0034] The fermentation bacteria used in the following examples were all purchased commercially. The information of the fermentation bacteria is as follows: purchased from Jining Xianong Biotechnology Co., Ltd., the fermentation bacteria are highly active live bacteria for liquid fertilizer fermentation, with an effective live bacteria count >20 billion / g.
[0035] Example
[0036] Example 1
[0037] Example 1 provides a method for preparing a compound microbial fertilizer, comprising the following steps:
[0038] Step (1): Crush 100 kg of poultry and livestock blood clots and 25 kg of animal offal, add 0.2 kg of fermentation bacteria, 5 kg of molasses and 600 kg of water and mix and ferment for 15 days at a fermentation temperature of 15℃. Stir once every 4 hours for 0.5 hours each time to obtain solution a.
[0039] Step (2): Crush 100kg of sheep manure, 10kg of chicken manure and 10kg of lignite, add 0.1kg of fermentation bacteria and 800kg of water and mix for 15 days. The fermentation temperature is 15℃. Stir once every 4 hours for 0.5 hours each time to obtain solution b.
[0040] Step (3): 100 kg of waste apples, 90 kg of waste grapes, 90 kg of waste melons, 3 kg of jujubes, 3 kg of bitter beans, 10 kg of oilseed meal and 10 kg of rice bran are crushed, 0.1 kg of fermentation bacteria and 500 kg of water are added and mixed for fermentation for 10 days at a temperature of 15°C. The mixture is stirred once every 4 hours for 0.5 hours each time to obtain solution c.
[0041] Step (4): Crush 10 kg of eggshells, add 100 kg of vinegar and soak for 20 days to obtain solution d;
[0042] Step (5): Mix 100kg of solution a, 90kg of solution b, 90kg of solution c, and 0.8kg of solution d, add 3kg of molasses, 0.6kg of Bacillus subtilis, 0.3kg of EM bacteria, and 0.25kg of Trichoderma harzianum, mix thoroughly and carry out secondary fermentation. Aerate once every 4 hours for 0.5 hours each time. The fermentation time is 7 days to obtain the compound microbial stock solution.
[0043] In step (6), 5.4 kg of urea, 3 kg of ammonium phosphate, 3.3 kg of potassium sulfate and 100 kg of the compound microbial stock solution obtained in step (5) are thoroughly mixed to obtain compound microbial fertilizer.
[0044] Example 2
[0045] Example 2 provides a method for preparing a compound microbial fertilizer, comprising the following steps:
[0046] Step (1): Crush 100 kg of poultry and livestock blood clots and 30 kg of animal offal, add 0.25 kg of fermentation bacteria, 6 kg of molasses and 650 kg of water and mix and ferment for 18 days at a fermentation temperature of 25°C. Stir once every 4 hours for 0.5 hours each time to obtain solution a.
[0047] Step (2): Crush 100kg of sheep manure, 15kg of chicken manure and 13kg of lignite, add 0.15kg of fermentation bacteria and 900kg of water and mix for 18 days. The fermentation temperature is 25℃. Stir once every 4 hours for 0.5 hours each time to obtain solution b.
[0048] Step (3): 100 kg of waste apples, 95 kg of waste grapes, 95 kg of waste melons, 3.5 kg of jujubes, 3.5 kg of bitter beans, 15 kg of oilseed meal and 13 kg of rice bran are crushed, 0.15 kg of fermentation bacteria and 550 kg of water are added and mixed for fermentation for 13 days at a temperature of 25°C. The mixture is stirred once every 4 hours for 0.5 hours each time to obtain solution c.
[0049] Step (4): Crush 11 kg of eggshells, add 100 kg of vinegar and soak for 25 days to obtain solution d;
[0050] Step (5): Mix 100kg of solution a, 95kg of solution b, 95kg of solution c, and 0.9kg of solution d, add 3.5kg of molasses, 0.7kg of Bacillus subtilis, 0.35kg of EM bacteria, and 0.35kg of Trichoderma harzianum, mix thoroughly and carry out secondary fermentation. Aerate once every 4 hours for 0.5 hours each time. The fermentation time is 8 days to obtain the compound microbial stock solution.
[0051] In step (6), 5.6 kg of urea, 3.2 kg of ammonium phosphate, 3.6 kg of potassium sulfate and 100 kg of the compound microbial stock solution obtained in step (5) are thoroughly mixed to obtain compound microbial fertilizer.
[0052] Example 3
[0053] Example 3 provides a method for preparing a compound microbial fertilizer, comprising the following steps:
[0054] Step (1): Crush 100 kg of poultry and livestock blood clots and 35 kg of animal offal, add 0.3 kg of fermentation bacteria, 7 kg of molasses and 700 kg of water and mix and ferment for 20 days at a fermentation temperature of 35℃. Stir once every 4.5 hours for 1 hour each time to obtain solution a.
[0055] Step (2): Crush 100kg of sheep manure, 20kg of chicken manure and 15kg of lignite, add 0.2kg of fermentation bacteria and 1000kg of water and mix for 20 days. The fermentation temperature is 35℃. Stir once every 4.5 hours for 1 hour each time to obtain solution b.
[0056] Step (3): 100 kg of waste apples, 100 kg of waste grapes, 100 kg of waste melons, 4 kg of jujubes, 4 kg of bitter beans, 20 kg of oilseed meal and 15 kg of rice bran are crushed, 0.2 kg of fermentation bacteria and 600 kg of water are added and mixed for fermentation for 15 days at a temperature of 35°C. The mixture is stirred once every 4.5 hours for 1 hour each time to obtain solution c.
[0057] Step (4): Crush 12 kg of eggshells, add 100 kg of vinegar and soak for 30 days to obtain solution d;
[0058] Step (5): Mix 100kg of solution a, 100kg of solution b, 100kg of solution c, and 1kg of solution d. Add 4kg of molasses, 0.8kg of Bacillus subtilis, 0.4kg of EM bacteria, and 0.45kg of Trichoderma harzianum. Mix thoroughly for secondary fermentation. Aerate once every 4.5 hours for 1 hour each time. The fermentation time is 10 days to obtain the compound microbial stock solution.
[0059] In step (6), 5.8 kg of urea, 3.5 kg of ammonium phosphate, 3.8 kg of potassium sulfate and 100 kg of the compound microbial stock solution obtained in step (5) are thoroughly mixed to obtain compound microbial fertilizer.
[0060] Application examples
[0061] Soil from the same area was used to plant wolfberry trees. Three experimental groups were set up: soil without fertilizer (labeled TCK), soil without inorganic fertilizer (labeled T1), and soil with compound microbial fertilizer (using the compound microbial fertilizer prepared in Example 2, labeled T2). The changes in organic matter, total nitrogen, total phosphorus, and total potassium in the soil were recorded after planting wolfberry trees. At the same time, the height of wolfberry trees during the budding, flowering, and fruiting stages was recorded.
[0062] The application of compound microbial fertilizer is as follows: 7 kg / mu per drip irrigation during the seedling stage, 10 kg / mu per drip irrigation during the flowering stage, and 15 kg / mu per drip irrigation during the fruiting stage; the same amount of compound microbial fertilizer should be applied to soil (T2).
[0063] Inorganic fertilizer application is as follows: During the seedling stage, apply 5 kg / mu of urea and 5 kg / mu of potassium dihydrogen phosphate via drip irrigation each time. After flowering, apply 6 kg / mu of urea, 5 kg / mu of phosphate fertilizer, and 3 kg / mu of potassium fertilizer via drip irrigation each time. During the peak fruiting stage, apply 6 kg / mu of urea, 3 kg / mu of phosphate fertilizer, and 6 kg / mu of potassium fertilizer via drip irrigation each time. The same amount of inorganic fertilizer should be applied to all soils (T1).
[0064] The results of soil organic matter content after planting are shown in Table 1 below:
[0065] Table 1
[0066]
[0067]
[0068] Note: TCK is soil without fertilizer, T1 is soil with inorganic fertilizer (nitrogen, phosphorus and potassium), and T2 is soil with compound microbial fertilizer.
[0069] The results of total nitrogen in the soil after planting are shown in Table 2 below:
[0070] Table 2
[0071]
[0072] Note: TCK is soil without fertilizer, T1 is soil with inorganic fertilizer (nitrogen, phosphorus and potassium), and T2 is soil with compound microbial fertilizer.
[0073] The results of total phosphorus in the soil after planting are shown in Table 3 below:
[0074] Table 3
[0075]
[0076] Note: TCK is soil without fertilizer, T1 is soil with inorganic fertilizer (nitrogen, phosphorus and potassium), and T2 is soil with compound microbial fertilizer.
[0077] Table 4 below shows the total potassium content in the soil:
[0078] Table 4
[0079]
[0080] Note: TCK is soil without fertilizer, T1 is soil with inorganic fertilizer (nitrogen, phosphorus and potassium), and T2 is soil with compound microbial fertilizer.
[0081] The plant height during goji berry cultivation is recorded as follows:
[0082] See Table 5 below for statistics on plant height during the budding stage:
[0083] Table 5
[0084]
[0085] Note: CK is wolfberry trees without fertilizer, T1 is wolfberry trees with inorganic fertilizer (nitrogen, phosphorus and potassium), and T2 is wolfberry trees with compound microbial fertilizer.
[0086] See Table 6 below for plant height during peak flowering period:
[0087] Table 6
[0088]
[0089] Note: CK is wolfberry trees without fertilizer, T1 is wolfberry trees with inorganic fertilizer (nitrogen, phosphorus and potassium), and T2 is wolfberry trees with compound microbial fertilizer.
[0090] See Table 7 below for plant height during peak fruiting period:
[0091] Table 7
[0092]
[0093] Note: CK is wolfberry trees without fertilizer, T1 is wolfberry trees with inorganic fertilizer (nitrogen, phosphorus and potassium), and T2 is wolfberry trees with compound microbial fertilizer.
[0094] For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations, but obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this invention.
Claims
1. A method for preparing a compound microbial fertilizer, characterized in that, Includes the following steps: Step (1): Crush poultry and livestock blood clots and animal viscera, add fermentation bacteria, molasses and water to mix and ferment to obtain solution a; Step (2): Crush sheep manure, chicken manure, and lignite, add fermentation bacteria and water to mix and ferment, and obtain solution b; Step (3): Crush waste apples, waste grapes, waste melons, jujubes, bitter beans, oilseed meal and rice bran, add fermentation bacteria and water to mix and ferment, and obtain solution c; Step (4): Crush the eggshells, add vinegar and soak to obtain solution d; Step (5): Mix solutions a, b, c, and d, add molasses, Bacillus subtilis, EM bacteria, and Trichoderma harzianum, mix thoroughly, and carry out secondary fermentation to obtain a compound microbial stock solution; Step (6): The nitrogen fertilizer, phosphorus fertilizer, potassium fertilizer and the compound microbial stock solution obtained in step (5) are thoroughly stirred to obtain the compound microbial fertilizer.
2. The method for preparing a compound microbial fertilizer according to claim 1, characterized in that, In step (1), by weight, relative to 100 parts of the poultry and livestock blood clots, the amount of animal offal is 25-35 parts, the amount of fermentation bacteria is 0.2-0.3 parts, the amount of molasses is 5-7 parts, and the amount of water is 600-700 parts; in step (2), by weight, relative to 100 parts of the sheep manure, the amount of chicken manure is 10-20 parts, the amount of lignite is 10-15 parts, the amount of fermentation bacteria is 0.1-0.2 parts, and the amount of water is 800-1000 parts; in step ( In step (3), by weight, relative to 100 parts of waste apples, the amount of waste grapes is 90-100 parts, the amount of waste melons is 90-100 parts, the amount of jujubes is 3-4 parts, the amount of bitter beans is 3-4 parts, the amount of oilseed meal is 10-20 parts, the amount of rice bran is 10-15 parts, the amount of fermentation bacteria is 0.1-0.2 parts, and the amount of water is 500-600 parts; in step (4), by weight, relative to 100 parts of vinegar, the amount of eggshells is 10-12 parts; In step (5), by weight, relative to 100 parts of solution a, the amount of solution b is 90-100 parts, the amount of solution c is 90-100 parts, the amount of solution d is 0.8-1 parts, the amount of molasses is 3-4 parts, the amount of Bacillus subtilis is 0.6-0.8 parts, the amount of EM bacteria is 0.3-0.4 parts, and the amount of Trichoderma harzianum is 0.25-0.45 parts; in step (6), by weight, relative to 100 parts of the compound microbial stock solution, the amount of nitrogen fertilizer is 5.4-5.8 parts, the amount of phosphate fertilizer is 3-3.5 parts, and the amount of potassium fertilizer is 3.3-3.8 parts.
3. The method for preparing a compound microbial fertilizer according to claim 1, characterized in that, In steps (1) to (3), the fermentation temperature is 15-35℃; in steps (1) to (2), the fermentation time is 15-20 days; in step (3), the fermentation time is 10-15 days.
4. The method for preparing a compound microbial fertilizer according to claim 1, characterized in that, In steps (1) to (3), the mixture is stirred once every 4-4.5 hours during the fermentation process, and each stirring lasts for 0.5-1 hours.
5. The method for preparing a compound microbial fertilizer according to claim 1, characterized in that, The operating environment temperature for steps (4) and (6) is 15-35℃.
6. The method for preparing a compound microbial fertilizer according to claim 1, characterized in that, In step (4), the soaking time is 20-30 days.
7. The method for preparing a compound microbial fertilizer according to claim 1, characterized in that, In step (5), the secondary fermentation process is aerated once every 4-4.5 hours, with each aeration lasting 0.5-1 hour; the secondary fermentation time is 7-10 days.
8. A compound microbial fertilizer, characterized in that, It is prepared by the method described in any one of claims 1-8.
9. An application of a compound microbial fertilizer, characterized in that, The compound microbial fertilizer is applied to the fertilization of fruits, vegetables, cash crops, and field crops.
10. The application of the compound microbial fertilizer according to claim 9, characterized in that, The dosage of the compound microbial fertilizer is as follows: 6-9 kg / mu per drip irrigation during the seedling stage, 9-12 kg / mu per drip irrigation during the flowering stage, and 12-15 kg / mu per drip irrigation during the fruiting stage. Alternatively, dilute 500-700 times for foliar spraying.