Microbial composite efficient organic bacterial fertilizer and preparation method thereof

Abstract

The invention discloses a microbial compound high-efficiency organic bacterial fertilizer which comprises the following raw materials: 10-20 parts of a microbial agent, 10-20 parts of humic acid, 3-10 parts of natural mineral powder, 1-7 parts of a plant extract, 2-4 parts of amino acid, 2-5 parts of a seaweed extract, 1-3 parts of chitosan, 3-7 parts of charcoal, 1-3 parts of chitin, 2-5 parts of potassium fulvate and 1-3 parts of lignosulfonate. The problems that existing organic bacterial manure is single in function, not remarkable in effect, high in preparation cost and the like are solved. The organic bacterial fertilizer has multiple functions of improving soil fertility, promoting crop growth, enhancing crop stress resistance and the like, and the preparation method is simple, easy to implement, low in cost and suitable for large-scale production.

Description

Technical Field

[0001] The invention belongs to the technical field of fertilizers, and in particular relates to a microbial composite high-efficiency organic fertilizer and a preparation method thereof. Background Art

[0002] As an important part of organic agriculture, organic bacterial fertilizer has many functions, such as improving soil structure, increasing soil fertility, promoting crop growth, and enhancing crop resistance. However, organic bacterial fertilizers on the market currently have problems such as single function, insignificant effect, and high preparation cost.

[0003] Traditional organic fertilizers are mainly made from organic materials such as animal manure and straw, which are made by adding a small amount of microorganisms after simple composting. Although this kind of organic fertilizer contains a certain amount of organic matter and microorganisms, due to improper treatment of organic materials and limited types and quantities of microorganisms, its fertilizer efficiency is low and it is difficult to meet the needs of modern agricultural production.

[0004] In addition, the existing methods for preparing organic fertilizers are mostly complicated, requiring a lot of manpower, material resources and time, and are costly, which is not conducive to large-scale production and promotion and application.

[0005] Therefore, it is of great practical significance to develop a microbial composite high-efficiency organic fertilizer with diverse functions, significant effects and low cost and a preparation method thereof. Summary of the invention

[0006] The object of the present invention is to provide a microbial composite high-efficiency organic fertilizer and a preparation method thereof, so as to solve the problems of single function, insignificant effect, high preparation cost and the like of existing organic fertilizers. The organic fertilizer of the present invention has multiple functions such as improving soil fertility, promoting crop growth, and enhancing crop stress resistance, and the preparation method is simple and easy, low in cost, and suitable for large-scale production.

[0007] A microbial composite high-efficiency organic fertilizer, the raw materials of which include: 10-20 parts of microbial agent, 10-20 parts of humic acid, 3-10 parts of natural mineral powder, 1-7 parts of plant extract, 2-4 parts of amino acid, 2-5 parts of seaweed extract, 1-3 parts of chitosan, 3-7 parts of biochar, 1-3 parts of chitin, 2-5 parts of potassium humate, and 1-3 parts of lignin sulfonate;

[0008] The microbial agent comprises: Bacillus subtilis, Bacillus licheniformis, Bacillus gelatinus, lactic acid bacteria, yeast, Trichoderma, actinomycetes, phosphate-solubilizing bacteria, potassium-solubilizing bacteria, nitrogen-fixing bacteria, silicate bacteria, arbuscular mycorrhizal fungi, indole-producing Flavobacterium, Streptomyces griseus and water;

[0009] Wherein, the Bacillus subtilis contains 1×10 8 -1.5×109 CFU, accounting for 3%-5% by weight; the colony count of the licheniformis bacillus per milliliter is 8×10 6 -1×10 7 CFU, accounting for 2%-4% by weight; the jelly-like Bacillus contains 8×10 per milliliter 6 -1×10 7 CFU, accounting for 1%-3% of the weight; lactic acid bacteria contain 2×10 per milliliter 7 -4×10 7 CFU, accounting for 1%-2% by weight; each milliliter of the yeast contains 2×10 7 -4×10 7 CFU, accounting for 1%-2% by weight; each milliliter of the Trichoderma contains 1×10 7 -1.2×10 8 CFU, 0.5%-1.5%; the actinomycetes contain 1×10 7 -1.2×10 8 CFU, accounting for 0.5%-1.5% by weight; each milliliter of the phosphate-solubilizing bacteria contains 8×10 6 -1×10 8 CFU, accounting for 0.5%-1.5% by weight; each milliliter of the potassium-dissolving bacteria contains 8×10 6 -1×10 8 CFU, accounting for 0.5%-1.5% by weight; each milliliter of the nitrogen-fixing bacteria contains 1×10 8 -1.2×10 8 CFU, accounting for 0.5%-1.5% by weight; the silicate bacteria contain 8×10 per milliliter 6 -1×10 7 CFU, accounting for 0.5%-1.5% by weight; the arbuscular mycorrhizal fungi contain 5×10 6 -8×10 6 CFU, accounting for 0.5%-1% by weight; each milliliter of the indole-producing bacillus contains 5×10 6 -8×10 6 CFU, accounting for 0.5%-1% by weight; the Streptomyces griseus contains 7×10 6 -1×10 7 CFU, 0.5%-1% by weight; the rest is water.

[0010] Further, the natural mineral powder includes: 1-3 parts of zeolite powder, 1-3 parts of medical stone powder, 1-2 parts of attapulgite powder, 1-2 parts of vermiculite powder, 1-2 parts of diatomaceous earth powder, 1-2 parts of phosphate rock powder, and 1-2 parts of sepiolite powder;

[0011] The plant extracts include: 0.5-1.5 parts of Sophora flavescens extract, 0.5-1.5 parts of garlic extract, 0.5-1.5 parts of peppermint extract, 0.5-1.5 parts of wormwood extract, 0.5-1.5 parts of Atractylodes lancea extract, 0.5-1.5 parts of Phellodendron amurense extract, and 0.5-1.5 parts of clove extract;

[0012] The amino acids include: glycine 1-5mmol / L, accounting for 10%-20%, alanine 0.5-3mmol / L, accounting for 15%-20%, valine 0.3-2mmol / L, accounting for 5%-15%, leucine 0.2-1.5mmol / L, accounting for 5%-10%, isoleucine 0.5-3mmol / L, accounting for 5%-10%, proline 0.5-3mmol / L, accounting for 5-15%, serine 0.3-1.8mmol / L, 5%-10%, threonine 0.3-1.5mmol / L, accounting for 5%-10%, and methionine 0.3-1.5mmol / L, accounting for 5%-10%.

[0013] Furthermore, the raw materials include 13-16 parts of microbial agents, 12-16 parts of humic acid, 5-8 parts of natural mineral powder, 3-5 parts of plant extracts, 3-4 parts of amino acids, 3-4 parts of seaweed extracts, 2-3 parts of chitosan, 4-7 parts of biochar, 2-3 parts of chitin, 3-5 parts of potassium humate, and 2-3 parts of lignin sulfonate.

[0014] Further, the natural mineral powder includes: 2 parts of zeolite powder, 2 parts of medical stone powder, 2 parts of attapulgite powder, 2 parts of vermiculite powder, 2 parts of diatomaceous earth powder, 2 parts of phosphate rock powder, and 1 part of sepiolite powder;

[0015] The plant extracts include: 0.8-1.2 parts of Sophora flavescens extract, 0.8-1.2 parts of garlic extract, 0.7-1.3 parts of peppermint extract, 0.6-1.2 parts of wormwood extract, 0.6-1.1 parts of Atractylodes lancea extract, 0.8-1.2 parts of Phellodendron amurense extract, and 0.6-1.2 parts of clove extract;

[0016] A method for preparing a microbial composite high-efficiency organic fertilizer comprises the following steps:

[0017] 1. Preprocessing:

[0018] (1) Crushing and screening of solid raw materials:

[0019] 1) using a pulverizer to crush humic acid, natural mineral powder, chitosan, biochar, chitin, potassium fulvic acid, and lignin sulfonate solid raw materials into particles of 100-150 mesh;

[0020] 2) The crushed raw materials are screened using a sieve with a pore size of 0.05-0.15 mm;

[0021] 3) Drying and impurity removal;

[0022] 2. Batch Mixing

[0023] 1) First batch mixing:

[0024] Preliminarily mix the microbial agent and humic acid according to the proportion and operation method in the stepwise mixing method, with a stirring speed of 30-50rpm and a stirring time of 20-30 minutes; then, add zeolite powder, medical stone powder, attapulgite powder, vermiculite powder, diatomaceous earth powder, phosphate rock powder and sepiolite powder in the natural mineral powder in sequence, and stir for 10-15 minutes after adding each mineral powder, with a stirring speed of 40-60rpm; during the mixing process, control the ambient temperature between 25-30°C and the relative humidity between 40% and 60%;

[0025] 2) Second batch mixing:

[0026] The plant extract, amino acid and seaweed extract raw materials are sequentially added into the mixing device; when adding the plant extract, slowly add the sophora flavescens extract, garlic extract, mint extract, wormwood extract, atractylodes lancea extract, phellodendron amurense extract and clove extract in the order of stirring at a speed of 30-40 rpm for 15-20 minutes;

[0027] When adding amino acids, add them in the order of glycine, alanine, valine, leucine, isoleucine, proline, serine, threonine, and methionine. Stir for 8-12 minutes after adding each amino acid at a stirring speed of 40-50 rpm.

[0028] When adding seaweed extract, slowly pour it into the mixer, stirring at a speed of 40-60rpm, and stirring for 10-15 minutes; during the mixing process, control the ambient temperature between 20-25℃ and the relative humidity between 45%-55%;

[0029] 3) The third batch of mixing:

[0030] Add chitosan, biochar, chitin, potassium humate, and lignin sulfonate raw materials into the mixing device in sequence; stir each raw material for 5-10 minutes after adding it, and the stirring speed is 30-40rpm; during the mixing process, control the ambient temperature between 25-30℃ and the relative humidity between 40%-60%;

[0031] 5) Final mixing:

[0032] After each batch is mixed, it is temporarily stored, and then the mixture of each batch is finally mixed; during the final mixing, the three batches of mixed materials are added to the large mixing equipment in sequence, the stirring speed is 30-40rpm, and the stirring time is 30-40 minutes.

[0033] Furthermore, in the drying and impurity removal process, the drying temperature and duration required for each raw material are set as:

[0034] Humic acid, drying temperature is 50-60℃, drying time is 4-6 hours;

[0035] Zeolite powder, drying temperature is 80-100℃, and drying time is 3-5 hours;

[0036] Medical stone powder, drying temperature is 70-90℃, drying time: 2-4 hours;

[0037] Attapulgite powder, drying temperature is 75-95℃, drying time: 3-4 hours;

[0038] Vermiculite powder, drying temperature is 85-105℃, drying time: 2-3 hours;

[0039] Diatomaceous earth powder, drying temperature is 70-90℃, drying time: 3-4 hours;

[0040] Phosphate rock powder, drying temperature is 80-100℃, drying time: 3-5 hours;

[0041] Sepiolite powder, drying temperature: 75-95℃, drying time: 3-4 hours;

[0042] Plant extracts, drying temperature: 40-50°C, drying time: 6-8 hours;

[0043] The seaweed extract is diluted with ethanol as a solvent, the concentration of ethanol is controlled at 30%-50%, the stirring speed is 80-120rpm, and the stirring time is 15-30 minutes; at the same time, the dilution temperature is 20-30°C;

[0044] Furthermore, the pH value of the bacterial fertilizer obtained after the final mixing step is 6.5-8.5.

[0045] The advantages of the present invention are:

[0046] In terms of nutrient supply, bacterial fertilizer contains humic acid, natural mineral powder, amino acids, seaweed extract, potassium humate and other ingredients. It can improve soil structure and soil fertility, and can also combine with minerals to form a stable aggregate structure to prevent soil compaction, improve nutrient utilization and enhance plant resistance. These nutrients work together to provide plants with comprehensive and balanced nutrients, and the nutrient release is slow and lasting, reducing nutrient loss and waste and improving fertilizer utilization.

[0047] The microbial community is rich, diverse and powerful. Among them, Bacillus subtilis and Bacillus licheniformis can produce antibacterial substances, inhibit the growth of pathogens and reduce plant diseases. Phosphate-solubilizing bacteria and potassium-solubilizing bacteria convert insoluble phosphorus and potassium into effective nutrients, improving the effectiveness of phosphorus and potassium in the soil. Nitrogen-fixing bacteria convert nitrogen in the air into nitrogen that can be used by plants, reducing the use of chemical nitrogen fertilizers. Arbuscular mycorrhizal fungi coexist with plant roots to enhance nutrient and water absorption capacity. Indole-producing Flavobacterium produces plant growth hormones to promote plant growth.

[0048] In terms of soil improvement, humic acid and natural mineral powder improve soil physical properties, increase porosity and air permeability, and improve water retention and fertilizer retention. Biochar and chitin adsorb heavy metals and organic pollutants in the soil, reducing pollution risks. Biochar can also improve the pH buffering capacity of the soil and regulate the pH value. At the same time, the microbial community in the bacterial fertilizer interacts with the native microorganisms in the soil, regulates the structure and function of the soil microbial community, and promotes ecological balance. Plant extracts such as Sophora flavescens extract and garlic extract have antibacterial and anthelmintic effects, reduce the occurrence of diseases and pests, reduce the use of chemical pesticides, promote the growth of beneficial microorganisms, and enhance soil biological activity.

[0049] From the perspective of environmental protection and sustainable development, the bacterial fertilizer reduces the use of chemical fertilizers and pesticides. It provides comprehensive nutrients for plants, improves soil fertility, and reduces the use of chemical fertilizers; microbial communities inhibit the growth of pathogens, reduce plant diseases, and reduce the use of chemical pesticides. It reduces the use of chemical fertilizers and pesticides, reduces agricultural production costs, reduces environmental pollution, and protects the ecological environment. Its raw materials mainly come from natural substances, which are renewable, degradable, and will not cause pollution. Microbial communities improve soil structure, increase fertility, promote ecological balance, and provide guarantees for the sustainable development of agriculture. The preparation method adopts batch mixing to ensure uniform mixing of raw materials, improve product quality, and is simple to operate and easy to industrialize, with broad market prospects. DETAILED DESCRIPTION

[0050] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0051] Those skilled in the art should understand that these implementations are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0052] This scheme provides a microbial composite high-efficiency organic fertilizer and a preparation method thereof, the specific contents are as follows:

[0053] 1. Raw material pretreatment

[0054] Solid raw material crushing and screening:

[0055] Choose the appropriate type and parameters of the crusher according to the characteristics of different raw materials. For natural mineral powders with higher hardness, a ball mill is used for crushing, with a ball-to-material ratio of 3:1, a speed of 300-400 rpm, and a grinding time of 2-3 hours. For softer raw materials such as humic acid, a hammer mill is used with a speed of 1500-2000 rpm. The crushed raw materials are screened with multiple screens. First, a screen with an aperture of 0.15 mm is used for coarse screening to remove larger particles, and then a screen with an aperture of 0.08 mm is used for fine screening to ensure uniform particle size. The energy consumption during the crushing and screening process is recorded. The power consumption for crushing and screening per kilogram of raw material does not exceed 5 kWh, and the output reaches 200 kg per hour.

[0056] Drying and cleaning:

[0057] Humic acid is dried in a hot air circulation oven, the temperature is controlled at 50-60℃, and the humidity change in the oven is monitored. The initial humidity is 50%, and the humidity drops to below 10% after drying for 4-6 hours. Different drying equipment is selected for natural mineral powder according to its characteristics. Zeolite powder uses a fluidized bed dryer, the air flow velocity is controlled at 2-3 m / s, and the temperature distribution fluctuates within the range of 80-100℃ without exceeding ±2℃. For plant extracts, vacuum drying is adopted, the temperature is controlled at 40-50℃, and the vacuum degree is between -0.08 and -0.1 MPa. In the process of impurity removal, for natural mineral powder, a combination of multi-stage magnetic separation and screening is adopted. The magnetic field strength of the magnetic separation equipment is 2000-3000 Gauss, and the screening times are not less than two times.

[0058] Liquid Raw Material Handling:

[0059] During the dilution process of seaweed extract, high-precision metering equipment is used to ensure that the ethanol concentration is between 30% and 50%, and the error range is controlled within ±1%. The temperature changes during the dilution process are monitored, and the temperature fluctuation is required to be within the range of 20-30℃ and not exceed ±1℃. Amino acids are filtered and purified, and the pore size of the filter membrane is 0.2-0.5 microns, and the filtration pressure is 0.2-0.3 MPa.

[0060] 2. Batch Mixing Stage

[0061] First batch mixing:

[0062] Preliminary mixing of microbial agents and humic acid, using a double-helix conical mixer, controlling the stirring speed at 30-50rpm, stirring time for 20-30 minutes. Monitor temperature and humidity changes during the mixing process, temperature fluctuations do not exceed ±2°C, and relative humidity is controlled at 40%-60%. Automatic feeding equipment adds natural mineral powder, the feeding speed is a certain number of kilograms per minute, and the accuracy is controlled at ±2%. Record the energy consumption during the mixing process, such as the power consumption of each batch of mixing does not exceed a certain value. Sample and test the mixture composition at different locations, calculate the mixing uniformity, the standard deviation is less than 3%, and the coefficient of variation is less than 5%.

[0063] Second batch mixing:

[0064] Add plant extracts, amino acids, and seaweed extracts in a specific order. When adding plant extracts, stir at a speed of 30-40rpm for 15-20 minutes. When adding amino acids, stir for 8-12 minutes after each amino acid is added at a speed of 40-50rpm. When adding seaweed extract, slowly pour it into the mixer at a speed of 40-60rpm for 10-15 minutes. Strictly control the ambient temperature between 20-25℃ and the relative humidity between 45%-55%. Use a temperature and humidity sensor for real-time monitoring. The sensor accuracy is ±1℃ and ±2%RH, and the response time does not exceed 5 seconds.

[0065] Third batch mixing:

[0066] Add chitosan, biochar, chitin, potassium humate, and lignin sulfonate raw materials to the mixing equipment in sequence. Stir for 5-10 minutes after adding each raw material, and the stirring speed is 30-40rpm. Monitor the pH value of the mixture, use a high-precision pH meter, and calibrate it at two points once a week. The measurement error range is ±0.1. Adjust the pH value as needed by adding an appropriate amount of acidic or alkaline substances. The adjustment number should not exceed twice to ensure that the pH value of the final product is between 6.5-8.5.

[0067] Final Mix:

[0068] After each batch is mixed, store it temporarily and then conduct the final mixing. Add the three batches of mixed materials to the large mixing equipment in turn, with a stirring speed of 30-40rpm and a stirring time of 30-40 minutes. Carry out sampling inspections once an hour. The inspection items include microbial content, nutrients, and pH value, and all indicators are required to meet the standards. Record the energy consumption during the final mixing process, such as the power consumption of each batch of mixing does not exceed a certain value, the standard deviation of the mixing uniformity is less than 2%, and the coefficient of variation is less than 4%.

[0069] 3. Quality Inspection Stage

[0070] Microbiological content detection:

[0071] The plate counting method and flow cytometer are used to accurately count various species in the microbial inoculant. The accuracy of the plate counting method is above 95%, and the repeatability error is less than 5%.

[0072] Nutritional testing:

[0073] The organic matter content, nitrogen, phosphorus, potassium and other main nutrients content and trace element content in organic fertilizer are determined. The accuracy of the detection method requires the error to be within ±5%.

[0074] pH value detection:

[0075] A high-precision pH meter is used, and the calibration method is three-point calibration, which is calibrated once a month, with a measurement error range of ±0.05. The effect of pH value on microbial activity and nutrient release is studied, and the growth curve of microorganisms at different pH values ​​is determined through experiments. For example, when the pH value is 6.5, 7.0, 7.5, 8.0, and 8.5, the growth rate of microorganisms is a certain value. The rate of change of nutrient release also has a specific range at different pH values.

[0076] Moisture content detection:

[0077] The moisture content and water activity of organic fertilizer were determined by oven drying method and water activity meter. The temperature gradient of oven drying was set to gradually increase from room temperature to a certain temperature, and the temperature increase per hour did not exceed a certain value. The determination method and accuracy of the water activity meter require an error of ±0.02. The effect of moisture content on product quality and stability was analyzed, and the degree of agglomeration of products at different moisture contents was determined. For example, when the moisture content was within a certain range, the degree of agglomeration was divided into different levels. Changes in microbial activity were also related to moisture content, and there was a specific range of variation at different moisture contents.

[0078] 4. Packaging and Encapsulation Stage

[0079] Packaging material selection:

[0080] Select packaging materials with good biocompatibility and air permeability. Determine the thickness and specifications of the packaging materials, with a thickness error range of ±0.05 mm.

[0081] Packaging process control:

[0082] Automatic packaging equipment is used, and the sealing temperature accuracy is ±2℃. The packaged products are sampled and inspected once every 100 bags to check the integrity, sealing and label accuracy of the packaging. Unqualified products are handled by rework or scrapping.

[0083] Storage environment requirements:

[0084] Determine the storage environment requirements of organic fertilizer, control the temperature within a certain range, and the fluctuation does not exceed ±2℃ and ±5%RH. Use temperature and humidity sensors and ventilation equipment for real-time monitoring, and the sensor accuracy is ±1℃ and ±2%RH.

[0085] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments, but it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A microbial composite high-efficiency organic fertilizer, characterized in that: The raw materials include: 10-20 parts of microbial agent, 10-20 parts of humic acid, 3-10 parts of natural mineral powder, 1-7 parts of plant extract, 2-4 parts of amino acid, 2-5 parts of seaweed extract, 1-3 parts of chitosan, 3-7 parts of biochar, 1-3 parts of chitin, 2-5 parts of potassium fulvic acid, and 1-3 parts of lignin sulfonate; The microbial agent comprises: Bacillus subtilis, Bacillus licheniformis, Bacillus gelatinus, lactic acid bacteria, yeast, Trichoderma, actinomycetes, phosphate-solubilizing bacteria, potassium-solubilizing bacteria, nitrogen-fixing bacteria, silicate bacteria, arbuscular mycorrhizal fungi, indole-producing Flavobacterium, Streptomyces griseus and water; Wherein, the Bacillus subtilis contains 1×10 8 -1.5×10 9 CFU, accounting for 3%-5% by weight; the colony count of the licheniformis bacillus per milliliter is 8×10 6 -1×10 7 CFU, accounting for 2%-4% by weight; the jelly-like Bacillus contains 8×10 per milliliter 6 -1×10 7 CFU, accounting for 1%-3% of the weight; lactic acid bacteria contain 2×10 per milliliter 7 -4×10 7 CFU, accounting for 1%-2% by weight; each milliliter of the yeast contains 2×10 7 -4×10 7 CFU, accounting for 1%-2% by weight; each milliliter of the Trichoderma contains 1×10 7 -1.2×10 8 CFU, 0.5%-1.5%; the actinomycetes contain 1×10 7 -1.2×10 8 CFU, accounting for 0.5%-1.5% by weight; each milliliter of the phosphate-solubilizing bacteria contains 8×10 6 -1×10 8 CFU, accounting for 0.5%-1.5% by weight; each milliliter of the potassium-dissolving bacteria contains 8×10 6 -1×10 8 CFU, accounting for 0.5%-1.5% by weight; each milliliter of the nitrogen-fixing bacteria contains 1×10 8 -1.2×10 8 CFU, accounting for 0.5%-1.5% by weight; the silicate bacteria contain 8×10 per milliliter 6 -1×10 7 CFU, accounting for 0.5%-1.5% by weight; the arbuscular mycorrhizal fungi contain 5×10 6 -8×10 6 CFU, accounting for 0.5%-1% by weight; each milliliter of the indole-producing bacillus contains 5×10 6 -8×10 6 CFU, accounting for 0.5%-1% by weight; the Streptomyces griseus contains 7×10 6 -1×10 7 CFU, 0.5%-1% by weight; the rest is water.

2. The microbial composite high-efficiency organic fertilizer according to claim 1, characterized in that: The natural mineral powder includes: 1-3 parts of zeolite powder, 1-3 parts of medical stone powder, 1-2 parts of attapulgite powder, 1-2 parts of vermiculite powder, 1-2 parts of diatomaceous earth powder, 1-2 parts of phosphate rock powder, and 1-2 parts of sepiolite powder; The plant extracts include: 0.5-1.5 parts of Sophora flavescens extract, 0.5-1.5 parts of garlic extract, 0.5-1.5 parts of peppermint extract, 0.5-1.5 parts of wormwood extract, 0.5-1.5 parts of Atractylodes lancea extract, 0.5-1.5 parts of Phellodendron amurense extract, and 0.5-1.5 parts of clove extract; The amino acids include: glycine 1-5mmol / L, accounting for 10%-20%, alanine 0.5-3mmol / L, accounting for 15%-20%, valine 0.3-2mmol / L, accounting for 5%-15%, leucine 0.2-1.5mmol / L, accounting for 5%-10%, isoleucine 0.5-3mmol / L, accounting for 5%-10%, proline 0.5-3mmol / L, accounting for 5-15%, serine 0.3-1.8mmol / L, 5%-10%, threonine 0.3-1.5mmol / L, accounting for 5%-10%, and methionine 0.3-1.5mmol / L, accounting for 5%-10%.

3. The microbial composite high-efficiency organic fertilizer according to claim 1, characterized in that: The raw materials include 13-16 parts of microbial agents, 12-16 parts of humic acid, 5-8 parts of natural mineral powder, 3-5 parts of plant extracts, 3-4 parts of amino acids, 3-4 parts of seaweed extracts, 2-3 parts of chitosan, 4-7 parts of biochar, 2-3 parts of chitin, 3-5 parts of potassium humate, and 2-3 parts of lignin sulfonate.

4. A microbial composite high-efficiency organic fertilizer according to claim 2, characterized in that: The natural mineral powder includes: 2 parts of zeolite powder, 2 parts of medical stone powder, 2 parts of attapulgite powder, 2 parts of vermiculite powder, 2 parts of diatomaceous earth powder, 2 parts of phosphate rock powder, and 1 part of sepiolite powder; The plant extracts include: 0.8-1.2 parts of Sophora flavescens extract, 0.8-1.2 parts of garlic extract, 0.7-1.3 parts of peppermint extract, 0.6-1.2 parts of wormwood extract, 0.6-1.1 parts of Atractylodes lancea extract, 0.8-1.2 parts of Phellodendron amurense extract, and 0.6-1.2 parts of clove extract.

5. A method for preparing a microbial composite high-efficiency organic fertilizer, characterized in that: The following steps are involved:

1. Preprocessing: (1) Crushing and screening of solid raw materials: 1) using a pulverizer to crush humic acid, natural mineral powder, chitosan, biochar, chitin, potassium fulvic acid, and lignin sulfonate solid raw materials into 100-150 mesh particles; 2) The crushed raw materials are screened using a sieve with a pore size of 0.05-0.15 mm; 3) Drying and impurity removal; 2. Batch Mixing 1) First batch mixing: Preliminarily mix the microbial agent and humic acid according to the proportion and operation method in the stepwise mixing method, with a stirring speed of 30-50rpm and a stirring time of 20-30 minutes; then, add zeolite powder, medical stone powder, attapulgite powder, vermiculite powder, diatomaceous earth powder, phosphate rock powder and sepiolite powder in the natural mineral powder in sequence, and stir for 10-15 minutes after adding each mineral powder, with a stirring speed of 40-60rpm; during the mixing process, control the ambient temperature between 25-30°C and the relative humidity between 40% and 60%; 2) Second batch mixing: The plant extract, amino acid and seaweed extract raw materials are sequentially added into the mixing device; when adding the plant extract, slowly add the sophora flavescens extract, garlic extract, mint extract, wormwood extract, atractylodes lancea extract, phellodendron amurense extract and clove extract in the order of stirring at a speed of 30-40 rpm for 15-20 minutes; When adding amino acids, add them in the order of glycine, alanine, valine, leucine, isoleucine, proline, serine, threonine, and methionine. Stir for 8-12 minutes after adding each amino acid at a stirring speed of 40-50 rpm. When adding seaweed extract, slowly pour it into the mixer, stirring at a speed of 40-60rpm, and stirring for 10-15 minutes; during the mixing process, control the ambient temperature between 20-25℃ and the relative humidity between 45%-55%; 3) The third batch of mixing: Add chitosan, biochar, chitin, potassium humate, and lignin sulfonate raw materials into the mixing device in sequence; stir each raw material for 5-10 minutes after adding it, and the stirring speed is 30-40rpm; during the mixing process, control the ambient temperature between 25-30℃ and the relative humidity between 40%-60%; 4) Final mixing: After each batch is mixed, it is temporarily stored, and then the mixture of each batch is finally mixed; during the final mixing, the three batches of mixed materials are added to the large mixing equipment in sequence, the stirring speed is 30-40rpm, and the stirring time is 30-40 minutes.

6. The method for preparing a microbial composite high-efficiency organic fertilizer according to claim 5, characterized in that: In the drying and impurity removal process, the drying temperature and time required for each raw material are set as: Humic acid, drying temperature is 50-60℃, drying time is 4-6 hours; Zeolite powder, drying temperature is 80-100℃, and drying time is 3-5 hours; Medical stone powder, drying temperature is 70-90℃, drying time: 2-4 hours; Attapulgite powder, drying temperature is 75-95℃, drying time: 3-4 hours; Vermiculite powder, drying temperature is 85-105℃, drying time: 2-3 hours; Diatomaceous earth powder, drying temperature is 70-90℃, drying time: 3-4 hours; Phosphate rock powder, drying temperature is 80-100℃, drying time: 3-5 hours; Sepiolite powder, drying temperature: 75-95℃, drying time: 3-4 hours; Plant extracts, drying temperature: 40-50°C, drying time: 6-8 hours; The seaweed extract is diluted with ethanol as a solvent, the concentration of ethanol is controlled at 30%-50%, the stirring speed is 80-120rpm, and the stirring time is 15-30 minutes; at the same time, the dilution temperature is 20-30°C; 7. The method for preparing a microbial composite high-efficiency organic fertilizer according to claim 5, characterized in that: The pH value of the bacterial fertilizer obtained after the final mixing step is 6.5-8.5.