Soil structure improver containing compound microbial agent and preparation method thereof

Abstract

The invention discloses a soil structure improver containing a compound microbial agent and a preparation method of the soil structure improver. The soil structure improver containing the compound microbial agent is prepared from the following raw materials in percentage by mass: humic acid, the compound microbial agent, vermiculite powder, a seaweed extract, diatomite, polydextrose, pectin, monopotassium phosphate, an organic zinc chelate, a medium trace element supplement and bentonite, wherein the humic acid, the compound microbial agent, the vermiculite powder, the seaweed extract, the diatomite, the polydextrose, the pectin, the monopotassium phosphate, the organic zinc chelate, the medium trace element supplement and the bentonite are matched. According to the soil structure improver disclosed by the invention, through the synergistic effect of the compound microbial agent, the proportion of a soil aggregate structure is effectively increased, the stability and the anti-scouring capability of soil are enhanced, the air permeability and the water-retaining property of the soil are improved, an ideal environment is created for the growth of crop roots, and the microbial agent can be colonized in the soil, so that the soil structure is improved. A good microbial community structure is formed, the biological diversity of the soil is enhanced, the self-repairing capability of the soil is improved, and a healthy soil ecological system can be constructed.

Description

Technical Field

[0001] The invention relates to a soil structure improver containing a composite microbial agent and a preparation method thereof, belonging to the technical field of agricultural soil improvement. Background Art

[0002] Currently, the aquaculture process causes the pond soil to become black and smelly, the structure to be damaged, and the organic matter nutrients to be unbalanced, affecting the water quality and the growth of aquatic crops. Although traditional chemical amendments can quickly improve the soil, they are short-lived, and long-term use will bring negative effects such as soil salinization and compaction.

[0003] Composite microbial agents have attracted widespread attention due to their ability to improve soil structure, degrade organic matter, promote nutrient cycling, reduce soil odor, and enhance soil activity. However, existing agents still have shortcomings in terms of stability, application effect, and cost control, and there is an urgent need to provide an efficient, environmentally friendly, and cost-effective improvement solution. Summary of the invention

[0004] The purpose of the present invention is to provide a soil structure improver containing a composite microbial agent and a preparation method thereof, so as to solve the problems in the prior art, improve the soil aggregate structure, degrade organic matter, enhance soil fertility, and improve agricultural production efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a soil structure improver containing a composite microbial agent and a preparation method thereof, wherein the soil structure improver containing a composite microbial agent is formulated according to the mass fractions of the following raw materials: humic acid: 10%-15%, composite microbial agent: 10%-12%, vermiculite powder: 8%-12%, seaweed extract: 5%-8%, diatomaceous earth: 8%-10%, polydextrose: 5%-7%, pectin: 4%-6%, potassium dihydrogen phosphate: 4%-6%, organic zinc chelate: 3%-5%, medium and trace element supplement: 2%-4%, and bentonite: 15%-41%.

[0006] As a preferred technical solution of the present invention, the soil structure improver containing the composite microbial agent is formulated according to the mass fractions of the following raw materials: humic acid: 15%, composite microbial agent: 12%, vermiculite powder: 12%, seaweed extract: 8%, diatomaceous earth: 10%, polydextrose: 7%, pectin: 6%, potassium dihydrogen phosphate: 6%, organic zinc chelate: 5%, trace element supplement: 4%, and bentonite: 15%.

[0007] As a preferred technical solution of the present invention, the soil structure improver containing the composite microbial agent is formulated according to the mass fractions of the following raw materials: humic acid: 10%, composite microbial agent: 10%, vermiculite powder: 8%, seaweed extract: 5%, diatomaceous earth: 8%, polydextrose: 5%, pectin: 4%, potassium dihydrogen phosphate: 4%, organic zinc chelate: 3%, trace element supplement: 2%, and bentonite: 41%.

[0008] As a preferred technical solution of the present invention, the soil structure improver containing the composite microbial agent is formulated according to the mass fractions of the following raw materials: humic acid: 12%, composite microbial agent: 11%, vermiculite powder: 10%, seaweed extract: 6%, diatomaceous earth: 9%, polydextrose: 6%, pectin: 5%, potassium dihydrogen phosphate: 5%, organic zinc chelate: 4%, trace element supplement: 3%, and bentonite: 29%.

[0009] As a preferred technical solution of the present invention, the composite microbial agent includes a compound combination of at least three strains, including but not limited to Bacillus amyloliquefaciens, Pseudomonas and nitrogen-fixing bacteria, and the ratio thereof is 2:1:1.

[0010] As a preferred technical solution of the present invention, the trace element supplement contains three elements: calcium, magnesium and potassium, the ratio of calcium to magnesium is 2:1, and the potassium content is not less than 10%.

[0011] As a preferred technical solution of the present invention, the main active ingredient of the seaweed extract is fucoidan, and its content is not less than 80%.

[0012] As a preferred technical solution of the present invention, the preparation method of the soil structure improver containing the composite microbial agent comprises the following steps: (1) Raw material pretreatment: Dry humic acid, vermiculite powder, diatomaceous earth and bentonite separately to control the moisture content at 1-2%.

[0013] (2) Activation of bacterial agents: Soak the composite microbial agent in a glucose solution with a mass concentration of 1% for 2 hours and place it at 30°C for activation.

[0014] (3) Raw material mixing: All raw materials were weighed according to mass percentage, added into a blender in sequence, and stirred at 1200 rpm for 15 minutes to form a uniform mixture.

[0015] (4) Granulation: The mixture is placed in a rotary granulator, the granulation temperature is controlled at 60-70°C, the granulation time is 30 minutes, and granules with a particle size of 1-2 mm are obtained.

[0016] (5) Drying: Place the granules in a dryer and dry them at 50°C for 6 hours, controlling the moisture content within 5%.

[0017] (6) Packaging: Put the dried soil structure improver into a moisture-proof packaging bag, seal it and store it in a cool and dry place.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the soil structure improver of the present invention effectively improves the proportion of soil aggregate structure, enhances soil stability, improves soil aeration and decomposes organic matter to reduce soil odor through the synergistic effect of composite microbial agents, thereby creating an ideal environment for aquatic plant growth and aquaculture water bodies, and is rich in humic acid, amino acids, polysaccharides and mineral elements, which can significantly improve the organic matter content of the soil, enhance the soil's fertilizer retention capacity, and provide a continuous source of nutrients for the growth of aquatic plants. Moreover, the microbial agents can colonize in the soil, form a good microbial community structure, enhance soil biodiversity, improve the soil's self-repairing ability, and help build a healthy soil ecosystem. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The present invention provides a soil structure improver containing a composite microbial agent and a preparation method thereof: Embodiment 1: The soil structure improver containing composite microbial agent is formulated according to the mass fractions of the following raw materials: humic acid: 15%, composite microbial agent: 12%, vermiculite powder: 12%, seaweed extract: 8%, diatomaceous earth: 10%, polydextrose: 7%, pectin: 6%, potassium dihydrogen phosphate: 6%, organic zinc chelate: 5%, trace element supplement: 4%, bentonite: 15%.

[0021] Example 2: The soil structure improver containing a composite microbial agent is formulated according to the mass fractions of the following raw materials: humic acid: 10%, composite microbial agent: 10%, vermiculite powder: 8%, seaweed extract: 5%, diatomaceous earth: 8%, polydextrose: 5%, pectin: 4%, potassium dihydrogen phosphate: 4%, organic zinc chelate: 3%, trace element supplement: 2%, and bentonite: 41%.

[0022] Example 3: The soil structure improver containing a composite microbial agent is formulated according to the mass fractions of the following raw materials: humic acid: 12%, composite microbial agent: 11%, vermiculite powder: 10%, seaweed extract: 6%, diatomaceous earth: 9%, polydextrose: 6%, pectin: 5%, potassium dihydrogen phosphate: 5%, organic zinc chelate: 4%, trace element supplement: 3%, and bentonite: 29%.

[0023] The composite microbial agent includes a compound combination of at least three strains, including but not limited to Bacillus amyloliquefaciens, Pseudomonas and nitrogen-fixing bacteria, with a ratio of 2:1:1.

[0024] Furthermore, the trace element supplement contains three elements: calcium, magnesium and sulfur, the calcium-magnesium ratio is 2:1, and the sulfur content is not less than 10%.

[0025] Furthermore, the main active ingredient of the seaweed extract is fucoidan, and its content is not less than 80%.

[0026] The preparation method of the soil structure improver containing the composite microbial agent comprises the following steps: (1) Raw material pretreatment: Dry humic acid, vermiculite powder, diatomaceous earth and bentonite separately to control the moisture content at 1-2%.

[0027] (2) Activation of bacterial agents: Soak the composite microbial agent in a glucose solution with a mass concentration of 1% for 2 hours and place it at 30°C for activation.

[0028] (3) Raw material mixing: All raw materials were weighed according to mass percentage, added into a blender in sequence, and stirred at 1200 rpm for 15 minutes to form a uniform mixture.

[0029] (4) Granulation: The mixture is placed in a rotary granulator, the granulation temperature is controlled at 60-70°C, the granulation time is 30 minutes, and granules with a particle size of 1-2 mm are obtained.

[0030] (5) Drying: Place the granules in a dryer and dry them at 50°C for 6 hours, controlling the moisture content within 5%.

[0031] (6) Packaging: Put the dried soil structure improver into a moisture-proof packaging bag, seal it and store it in a cool and dry place.

[0032] Experimental design 1. Experimental materials: 1) Existing technology improver: A common chemical improver on the market is selected, the main components of which are gypsum and phosphate, with a mass composition ratio of gypsum 70% and phosphate 30%; 2) The improver of the present invention: according to the formulation of claim 1; 2. Experimental site and soil type Experimental location: a breeding pond.

[0033] Soil type: The soil is acidic, black and smelly, with an initial pH of 5.5 and an organic matter content of 3.5%. The soil aggregate structure is poor and the permeability is weak. 3. Experimental methods Application amount: 1kg / mu of improver.

[0034] Control group: aquaculture ponds without any amendments.

[0035] Test indicators: soil organic matter content, pH value and proportion of aggregate structure.

[0036] The experimental results are as follows: Data analysis 1. The content of soil organic matter has increased significantly The organic matter content of the soil without amendment was 3.5%.

[0037] Existing technical improvers can degrade organic matter to 2.7%, but the effect is limited.

[0038] The improver of the present invention significantly degraded to 1.8%, an increase of 54.3%, far exceeding the existing technology.

[0039] Cause analysis: The compound microbial agent metabolizes and decomposes soil organic matter, degrades harmful organic matter accumulation in the soil, and improves the blackening and odor of the soil; 2. Soil pH improvement effect Existing technical conditioners increase the soil pH to 8.0, improving soil salinity, but the alkalinity is high, the effect is short-lived, and it is easy to relapse.

[0040] The improver of the present invention increases the pH value to 7.4, making the soil closer to neutral and more suitable for the growth of aquatic plants and the production of breeding animals.

[0041] Cause analysis: The composite microbial agent decomposes the acidic substances produced in the silt organic matter in the soil and regulates the salt concentration at the same time.

[0042] Improvement of pellet structure The existing improvers can increase the proportion of soil aggregate structure to 42%, while the improver of the present invention increases this index to 62.5%, showing a significant advantage.

[0043] Cause analysis: The ingredients such as polyglucose and pectin in the present invention promote the bonding between soil particles to form a granular structure.

[0044] Soil porosity enhancement effect The improver of the present invention makes the soil porosity reach 38.0%, which is much higher than the improver of the prior art (28.0%).

[0045] Cause analysis: The addition of vermiculite powder and diatomaceous earth significantly improved the air permeability and water retention of the soil.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil structure improver containing a composite microbial agent and a preparation method thereof, characterized in that: The soil structure improver containing the composite microbial agent is formulated according to the mass fractions of the following raw materials: humic acid: 10%-15%, composite microbial agent: 10%-12%, vermiculite powder: 8%-12%, seaweed extract: 5%-8%, diatomaceous earth: 8%-10%, polydextrose: 5%-7%, pectin: 4%-6%, potassium dihydrogen phosphate: 4%-6%, organic zinc chelate: 3%-5%, trace element supplement: 2%-4%, and bentonite: 15%-41%.

2. The soil structure improver containing a composite microbial agent according to claim 1, characterized in that: The soil structure improver containing the composite microbial agent is formulated according to the mass fractions of the following raw materials: humic acid: 15%, composite microbial agent: 12%, vermiculite powder: 12%, seaweed extract: 8%, diatomaceous earth: 10%, polydextrose: 7%, pectin: 6%, potassium dihydrogen phosphate: 6%, organic zinc chelate: 5%, medium and trace element supplement: 4%, and bentonite: 15%.

3. The soil structure improver containing a composite microbial agent according to claim 1, characterized in that: The soil structure improver containing the composite microbial agent is formulated according to the mass fractions of the following raw materials: humic acid: 10%, composite microbial agent: 10%, vermiculite powder: 8%, seaweed extract: 5%, diatomaceous earth: 8%, polydextrose: 5%, pectin: 4%, potassium dihydrogen phosphate: 4%, organic zinc chelate: 3%, medium and trace element supplement: 2%, and bentonite: 41%.

4. The soil structure improver containing a composite microbial agent according to claim 1, characterized in that: The soil structure improver containing the composite microbial agent is formulated according to the mass fractions of the following raw materials: humic acid: 12%, composite microbial agent: 11%, vermiculite powder: 10%, seaweed extract: 6%, diatomaceous earth: 9%, polydextrose: 6%, pectin: 5%, potassium dihydrogen phosphate: 5%, organic zinc chelate: 4%, medium and trace element supplement: 3%, and bentonite: 29%.

5. The soil structure improver containing a composite microbial agent according to claim 1, characterized in that: The composite microbial agent comprises a compound combination of at least three strains, wherein the strains include but are not limited to Bacillus amyloliquefaciens, Pseudomonas and nitrogen-fixing bacteria, and the ratio thereof is 2:1:

1.

6. The soil structure improver containing a composite microbial agent according to claim 1, characterized in that: The trace element supplement contains three elements: calcium, magnesium and sulfur, the calcium-magnesium ratio is 2:1, and the sulfur content is not less than 10%.

7. The soil structure improver containing a composite microbial agent according to claim 1, characterized in that: The main active ingredient of the seaweed extract is fucoidan, and the content of fucoidan is not less than 80%.

8. The method for preparing a soil structure improver containing a composite microbial agent according to claim 1, characterized in that: The preparation method of the soil structure improver containing the composite microbial agent comprises the following steps: (1) Raw material pretreatment: Dry humic acid, vermiculite powder, diatomaceous earth and bentonite separately to control the moisture content at 1-2%; (2) Activation of the bacterial agent: Soak the composite microbial agent in a glucose solution with a mass concentration of 1% for 2 hours and activate it at 30°C; (3) Raw material mixing: all raw materials were weighed according to mass percentage, added into a blender in sequence, and stirred at 1200 rpm for 15 minutes to form a uniform mixture; (4) Granulation: The mixture is placed in a rotary granulator, the granulation temperature is controlled at 60-70°C, the granulation time is 30 minutes, and granules with a particle size of 1-2 mm are obtained; (5) Drying: Place the granules in a dryer and dry them at 50°C for 6 hours, controlling the moisture content to less than 5%; (6) Packaging: Put the dried soil structure improver into a moisture-proof packaging bag, seal it and store it in a cool and dry place.

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