Granular soil conditioner and preparation method thereof

Abstract

The invention relates to the technical field of soil conditioning, and provides a granular soil conditioner and a preparation method thereof. Comprising the following components in percentage by weight: 7%-11% of potassium monosilicate, 12%-16% of calcium monosilicate, 1.5%-2.5% of metarhizium anisopliae, 2.5%-3.5% of bacillus amyloliquefaciens, 18%-22% of humic acid, 6%-8% of a seaweed extract, 3%-5% of lignosulfonate, 10%-15% of charcoal and 8%-12% of zeolite powder. The granular soil conditioner contains potassium monosilicate, calcium monosilicate and other components, provides silicon for soil, after use, the soil is loose, crop root systems are developed, humic acid improves soil fertility and water and fertilizer retention capacity, charcoal and zeolite powder improve soil breathability and water retention, formation of a soil aggregate structure is promoted, and the soil conditioner has the advantages of being good in soil conditioning effect and good in soil conditioning effect. Metarhizium anisopliae and bacillus amyloliquefaciens can inhibit harmful pathogenic bacteria in soil, improve the microbial community structure of the soil and improve the biological activity of the soil, most of the raw materials are natural sources, dependence on chemical synthesis raw materials is reduced, and pollution to the environment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of soil conditioning, in particular to a granular soil conditioner and a preparation method thereof. Background Art

[0002] In agricultural production, soil quality plays a vital role in the growth and development of crops. However, with long-term unreasonable fertilization and tillage, the soil faces many problems, such as soil compaction, decreased fertility, imbalance of microbial communities, heavy metal pollution, etc. Soil conditioners can improve soil compaction, loosen the soil to improve air permeability, passivate heavy metals, promote microbial activity in the soil, and enhance the penetration of fertilizer and water in the soil.

[0003] Traditional soil conditioners often have a single function and are difficult to comprehensively and effectively improve soil conditions. Existing soil conditioners may mainly focus on certain functions such as adjusting soil pH, increasing nutrient content, etc., but have limited effects on improving soil structure, promoting the growth of beneficial microorganisms, and improving crop resistance. At the same time, traditional conditioners may not be environmentally friendly and efficient in their preparation methods, and have problems such as high energy consumption and easy pollution. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a granular soil conditioner and a preparation method thereof, which solves the problem of single function of the soil conditioner in the prior art.

[0005] To achieve the above objectives, the present invention is implemented through the following technical scheme: a granular soil conditioner, comprising the following components in weight percentage: 7%-11% potassium monosilicate, 12%-16% calcium monosilicate, 1.5%-2.5% green muscardine, 2.5%-3.5% Bacillus amyloliquefaciens, 18%-22% humic acid, 6%-8% seaweed extract, 3%-5% lignin sulfonate, 10%-15% biochar, and 8%-12% zeolite powder.

[0006] Preferably, the weight ratio of potassium monosilicate to calcium monosilicate is 1:1.5-1:2.

[0007] Preferably, the effective viable count of Metarhizium anisopliae is 2×10 8 -4×10 8 cfu / g, the effective viable count of Bacillus amyloliquefaciens is 3×10 8 -5×10 8 cfu / g.

[0008] Preferably, the humic acid is natural mineral humic acid.

[0009] Preferably, the seaweed extract includes but is not limited to seaweed polysaccharides, alginic acid and plant growth regulators, which are extracted from kelp by enzymatic hydrolysis.

[0010] Preferably, a method for preparing a granular soil conditioner comprises the following steps:

[0011] S1. Potassium monosilicate, calcium monosilicate, humic acid, biochar, zeolite powder and lignin sulfonate were added to a mixer in proportion and mixed at a speed of 30-40 r / min for 25-35 min to obtain a mixed material A;

[0012] S2. The green anisopliae and Bacillus amyloliquefaciens were cultured and expanded to reach the required number of effective viable bacteria, and then mixed with the seaweed extract to obtain a mixture B, and then the mixture was added to the mixed material A obtained in S1, and stirring was continued for 15-25 minutes to obtain a mixed material C;

[0013] S3. The mixed material C is granulated at a granulation temperature of 60-70°C and a pressure of 0.3-0.4 MPa; and then dried at 45-55°C for 3-4 hours to obtain a granular soil conditioner.

[0014] The present invention provides a granular soil conditioner and a preparation method thereof. The granular soil conditioner has the following beneficial effects:

[0015] 1. The granular soil conditioner of the present invention contains ingredients such as potassium monosilicate and calcium monosilicate, which provide silicon elements to the soil. After use, the soil becomes loose, the crop root system develops, humic acid improves soil fertility and water and fertilizer retention capacity, biochar and zeolite powder improve soil permeability and water retention, and promote the formation of soil aggregate structure.

[0016] 2. The green muscardine and Bacillus amyloliquefaciens of the present invention can inhibit harmful pathogens in the soil, improve the structure of soil microbial communities, and enhance soil biological activity. The seaweed polysaccharides, alginic acid, and plant growth regulators in the seaweed extract stimulate crop growth, reduce crop growth cycles, and enhance crop stress resistance.

[0017] 3. The parameters such as rotation speed, mixing time, granulation temperature and pressure used in the preparation process of the present invention have been optimized, which reduces energy consumption while ensuring product quality. The raw materials are mostly from natural sources, such as natural mineral humic acid and seaweed extract extracted from kelp, which reduces dependence on chemical synthetic raw materials and reduces pollution to the environment. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 making creative work are within the scope of protection of the present invention.

[0019] Embodiment 1:

[0020] The embodiment of the present invention provides a granular soil conditioner, comprising the following components in weight percentage: 8% potassium monosilicate, 15% calcium monosilicate, 2% green muscardine, 3% Bacillus amyloliquefaciens, 20% humic acid, 7% seaweed extract, 4% lignin sulfonate, 12% biochar, and 10% zeolite powder, wherein the weight ratio of potassium monosilicate to calcium monosilicate is 1:1.8, and the effective viable count of green muscardine is 3×10 8 cfu / g, the effective viable count of Bacillus amyloliquefaciens is 4×10 8 cfu / g, humic acid uses natural mineral humic acid, lignin sulfonate can improve the dispersion of various components in the soil conditioner, make different particles evenly mixed, avoid the phenomenon of component aggregation, and when applied to the soil, it can ensure that the various components play a role more evenly; biochar has a porous structure. After being applied to the soil, it can increase the porosity of the soil, improve the air permeability and water retention of the soil, and is beneficial to the respiration and water absorption of the roots of crops such as potatoes, ginger, and sweet potatoes; zeolite powder has a strong ion exchange capacity and can adsorb cations in the soil, such as ammonium ions, potassium ions, etc., to reduce the loss of nutrients and improve the effectiveness of nutrients in the soil.

[0021] Seaweed extract is extracted from kelp by enzymatic hydrolysis, which mainly contains seaweed polysaccharides, alginic acid and plant growth regulators. The enzymatic hydrolysis is carried out under relatively mild conditions, which can reduce the damage to the extract, improve the extraction efficiency and product quality. Different enzymes have specific substrates and can specifically decompose specific components in seaweed, thereby improving the purity of the target extract. The enzymes commonly used in the enzymatic hydrolysis can be recycled and reused under certain conditions, reducing the use of chemical reagents and reducing pollution to the environment. The steps of obtaining seaweed extract by enzymatic hydrolysis are as follows:

[0022] Raw material preparation: Select fresh kelp or other seaweed as raw material, and perform pre-treatment such as cleaning and removing impurities to ensure the purity of the raw material;

[0023] Selection and addition of enzymes: According to the structural characteristics of seaweed and the properties of the target extract, select the appropriate enzyme combination. For example, cellulase can decompose cellulose in the seaweed cell wall, and pectinase can degrade pectin and other substances. The selected enzymes are added to the seaweed raw materials in a certain proportion;

[0024] Enzymatic hydrolysis: The seaweed raw material with added enzymes is placed under suitable reaction conditions, such as a certain temperature, pH value and reaction time. The enzymatic hydrolysis reaction is carried out under mild conditions to avoid damage to the target extract. During the reaction, the enzyme gradually decomposes the seaweed cell structure, so that the effective ingredients are gradually released into the solution;

[0025] Separation and purification: After the enzymatic hydrolysis reaction is completed, the seaweed residue is separated from the solution containing the extract by filtration and centrifugation. The extract can then be further purified by precipitation, chromatography and other techniques to improve its purity and quality.

[0026] A method for preparing a granular soil conditioner comprises the following steps:

[0027] S1: adding potassium monosilicate, calcium monosilicate, humic acid, biochar, zeolite powder and lignin sulfonate into a mixer in proportion, and mixing for 30 minutes at a rotation speed of 35 r / min to obtain a mixed material A;

[0028] S2: After Metarhizium anisopliae and Bacillus amyloliquefaciens are cultured and expanded to reach the effective viable bacterial count requirement, they are uniformly mixed with the seaweed extract to obtain a mixture B, and then the mixture B is added to the mixed material A, and the stirring is continued for 20 minutes to obtain a mixed material C;

[0029] S3: Granulate the material of mixed material C at a granulation temperature of 65° C. and a pressure of 0.35 MPa; then dry at 50° C. for 3.5 hours to obtain a granular soil conditioner.

[0030] Embodiment 2:

[0031] The embodiment of the present invention provides a granular soil conditioner, comprising the following components in weight percentage: 9% potassium monosilicate, 14% calcium monosilicate, 1.8% green muscardine, 2.8% Bacillus amyloliquefaciens, 19% humic acid, 6.5% seaweed extract, 3.5% lignin sulfonate, 13% biochar, and 9% zeolite powder. The weight ratio of potassium monosilicate to calcium monosilicate is 1:1.6, and the effective viable count of green muscardine is 2.5×10 8 cfu / g, the effective viable count of Bacillus amyloliquefaciens was 3.5×10 8 cfu / g, humic acid is natural mineral humic acid, and seaweed extract is extracted from kelp by enzymatic hydrolysis, containing seaweed polysaccharides, alginic acid and plant growth regulators.

[0032] A method for preparing a granular soil conditioner comprises the following steps:

[0033] S1: Add the ingredients into a mixer according to the proportion, mix at a speed of 32 r / min for 32 min, and obtain a mixed material A.

[0034] S2: Cultivate and expand Metarhizium muscardine and Bacillus amyloliquefaciens and mix them with the seaweed extract, then add the mixed material A and stir for 22 minutes to obtain the mixed material C.

[0035] S3: Granulation temperature 68°C, pressure 0.38 MPa, drying temperature 52°C, time 3.8 hours, to obtain soil conditioner.

[0036] Embodiment three:

[0037] The embodiment of the present invention provides a granular soil conditioner, comprising the following components in weight percentage: 10% potassium monosilicate, 13% calcium monosilicate, 2.2% green muscardine, 3.2% Bacillus amyloliquefaciens, 21% humic acid, 7.5% seaweed extract, 4.5% lignin sulfonate, 11% biochar, and 11% zeolite powder. The weight ratio of potassium monosilicate to calcium monosilicate is 1:1.7, and the effective viable count of green muscardine is 3.2×10 8 cfu / g, the effective viable count of Bacillus amyloliquefaciens was 4.2×10 8 cfu / g, humic acid adopts natural mineral humic acid, and seaweed extract is extracted from kelp by enzymatic hydrolysis, including seaweed polysaccharide, alginic acid and plant growth regulator.

[0038] A method for preparing a granular soil conditioner comprises the following steps:

[0039] S1: Mix the ingredients in proportion, at a speed of 38 r / min, for 34 min to obtain mixed material A;

[0040] S2: After the two bacteria are propagated, they are mixed with the seaweed extract and added into the mixed material A, and stirred for 24 minutes to obtain the mixed material C;

[0041] S3: Granulation temperature 62°C, pressure 0.32MPa, drying temperature 48°C, time 3.2 hours, to produce soil conditioner.

[0042] Embodiment 4:

[0043] The embodiment of the present invention provides a granular soil conditioner, comprising the following components in weight percentage: 11% potassium monosilicate, 12% calcium monosilicate, 2.5% green muscardine, 3.5% Bacillus amyloliquefaciens, 18% humic acid, 8% seaweed extract, 5% lignin sulfonate, 10% biochar, and 8% zeolite powder, the weight ratio of potassium monosilicate to calcium monosilicate is 1:1.5, and the effective viable count of green muscardine is 4×10 8 cfu / g, the effective viable count of Bacillus amyloliquefaciens is 5×10 8 cfu / g, natural mineral humic acid, seaweed extract containing seaweed polysaccharides, alginic acid and plant growth regulators, extracted from kelp by enzymatic hydrolysis.

[0044] A method for preparing a granular soil conditioner comprises the following steps:

[0045] S1: Mix the ingredients at a speed of 40 r / min for 25 min to obtain mixed material A.

[0046] S2: After the bacterial culture is expanded, it is mixed with the seaweed extract and added into the mixed material A, and stirred for 15 minutes to obtain the mixed material C.

[0047] S3: Granulation temperature 70°C, pressure 0.4 MPa, drying temperature 55°C, time 3 hours, to obtain soil conditioner.

[0048] Comparative Example 1:

[0049] The comparative example of the present invention provides a granular soil conditioner, comprising the following components in percentage by weight:

[0050] Potassium monosilicate 10%, calcium monosilicate 15%, humic acid 20%, biochar 12%, zeolite powder 10%, lignin sulfonate 4%.

[0051] A method for preparing a granular soil conditioner comprises the following steps:

[0052] Potassium monosilicate, calcium monosilicate, humic acid, biochar, zeolite powder and lignin sulfonate were added into a mixer in proportion and mixed at a speed of 35 r / min for 30 min;

[0053] Granulation was carried out at a granulation temperature of 65° C. and a pressure of 0.35 MPa; and then drying was carried out at 50° C. for 3.5 hours to obtain a soil conditioner.

[0054] Comparative Example 2:

[0055] The comparative example of the present invention provides a granular soil conditioner, comprising the following components in percentage by weight:

[0056] Potassium monosilicate 8%, calcium monosilicate 14%, Metarhizium anisopliae 2%, Bacillus amyloliquefaciens 3%, humic acid 20%, biochar 12%, zeolite powder 10%, lignin sulfonate 4%.

[0057] A method for preparing a granular soil conditioner comprises the following steps:

[0058] Potassium monosilicate, calcium monosilicate, humic acid, biochar, zeolite powder and lignin sulfonate were added into a mixer in proportion and mixed at a speed of 35 r / min for 30 min;

[0059] The green anisopliae and Bacillus amyloliquefaciens were cultured and expanded separately and then added to the mixed material, and the stirring was continued for 20 minutes;

[0060] Granulation was carried out at a granulation temperature of 65° C. and a pressure of 0.35 MPa; and then drying was carried out at 50° C. for 3.5 hours to obtain a soil conditioner.

[0061] Cultivation experiments of potatoes, ginger and sweet potatoes were carried out on the above-mentioned embodiments and comparative examples respectively. The growth status of potatoes, ginger and sweet potatoes after a certain period under the same cultivation environment is as follows:

[0062]

[0063] Case 1: The application of the soil conditioner of the present invention to ginger in a county in Henan Province has a significant effect on increasing yield:

[0064] In 2023, a user planted 8 mu of ginger and undertook a test demonstration area of ​​2 mu. On the afternoon of November 6, the yield was measured on site. The soil in the test demonstration field using the soil conditioner of the present invention was loose, and each plant had 16-21 more branches on average than the control. The double-slice ginger increased by 62% compared with the control. The ginger that had used the soil conditioner of the present invention had a strong flavor, large ginger, more ginger shreds, and a good commercial rate. The average yield per mu was 6463.23 kg. The ginger in the same plot that did not use the soil conditioner of the present invention had a yield of 3563.85 kg per mu, an increase of 2899.38 kg per mu, and an increase rate of 79.35%;

[0065] Case 2: The application of the soil conditioner of the present invention in a county in Zhumadian City has a significant effect on increasing production:

[0066] A farmer undertook a test demonstration field of 2 mu. The potato fields using the soil conditioner of the present invention had loose soil, developed root system, thick green leaves, thick stems, early ridge closing, no pests and diseases, many tubers, and significantly better biomass than the control. The average yield per mu was 8276 catties, each plant had 5-8 tubers, a high commercial rate, and a strong flavor. The control had an average of 5155.5 catties per mu, 3-4 tubers per plant, poor taste, average commercial rate, and serious black leg disease. After using the soil conditioner of the present invention, the yield per mu increased by 3120.5 catties, and the yield increase rate was 60.53%.

[0067] The above embodiments improve soil quality and provide rich nutrients and bioactive ingredients. The soil conditioner of the present invention significantly increases the yield of crops such as potatoes, ginger, and sweet potatoes. For example, experiments have shown that the yield can be increased by more than 20%; at the same time, it reduces the occurrence of diseases and pests and improves the quality of crops, such as the regular shape of potato tubers, high-quality ginger pieces, and good taste of sweet potatoes, which brings significant economic and social benefits to agricultural production and meets people's demand for high-quality agricultural products.

[0068] 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 granular soil conditioner, characterized in that: The invention comprises the following components in weight percentage: 7%-11% potassium monosilicate, 12%-16% calcium monosilicate, 1.5%-2.5% green anisopliae, 2.5%-3.5% Bacillus amyloliquefaciens, 18%-22% humic acid, 6%-8% seaweed extract, 3%-5% lignin sulfonate, 10%-15% biochar and 8%-12% zeolite powder.

2. A granular soil conditioner according to claim 1, characterized in that: The weight ratio of the potassium monosilicate to the calcium monosilicate is 1:1.5-1:

2.

3. A granular soil conditioner according to claim 1, characterized in that: The effective viable count of the green anisopliae is 2×10 8 -4×10 8 cfu / g, the effective viable count of Bacillus amyloliquefaciens is 3×10 8 -5×10 8 cfu / g.

4. A granular soil conditioner according to claim 1, characterized in that: The humic acid is natural mineral source humic acid.

5. A granular soil conditioner according to claim 1, characterized in that: The seaweed extract includes but is not limited to seaweed polysaccharides, alginic acid and plant growth regulators, which are extracted from kelp by enzymatic hydrolysis.

6. A method for preparing a granular soil conditioner, using the granular soil conditioner according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Potassium monosilicate, calcium monosilicate, humic acid, biochar, zeolite powder and lignin sulfonate were added to a mixer in proportion and mixed at a speed of 30-40 r / min for 25-35 min to obtain a mixed material A; S2. The green anisopliae and Bacillus amyloliquefaciens were cultured and expanded to reach the required number of effective viable bacteria, and then mixed with the seaweed extract to obtain a mixture B, and then the mixture was added to the mixed material A obtained in S1, and stirring was continued for 15-25 minutes to obtain a mixed material C; S3. The mixed material C is granulated at a granulation temperature of 60-70°C and a pressure of 0.3-0.4 MPa; and then dried at 45-55°C for 3-4 hours to obtain a granular soil conditioner.

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