Soil loosening and root promoting soil conditioner and preparation method thereof

Abstract

The invention belongs to the field of preparation of soil conditioners, and particularly relates to a soil loosening and root promoting soil conditioner and a preparation method thereof. A polymer formed by vinyltriethoxysilane, polyacrylic acid and coumarin under the catalytic action of citric acid is mixed with porous powder obtained after crushing and nutrient organic matter, and freeze-drying is performed to obtain the soil-loosening improved fermentation substrate which can be slowly released in soil; polyaspartic acid and acetylchitosamine are cross-linked under the catalytic action of N-hydroxysuccinimide, root-promoting nutrition powder and auxiliary root-promoting components are mixed, and the obtained composite root-promoting agent can significantly promote the growth of plant root systems; a porous structure contained in the protective stability maintaining agent can provide a relatively stable microenvironment for effective components, and the soil loosening and root promoting agent is mixed with the soil loosening and improving fermentation substrate and the composite root promoting agent, so that the prepared soil loosening and root promoting soil conditioner is remarkable in soil loosening and root promoting effect, long-acting and stable, small in dosage, obvious in effect and stable in conditioning effect after being stored.

Description

Technical Field

[0001] The present invention belongs to the field of soil conditioner preparation, and specifically relates to a soil conditioner for loosening soil and promoting root growth and a preparation method thereof. Background Art

[0002] Soil conditioners are materials added to soil to improve its physical, chemical, or biological properties. Their primary purpose is to improve soil structure, reduce salinity, regulate soil pH, improve soil moisture, or remediate contaminated soil. Traditional silicon-calcium-potassium soil conditioners use limestone as the calcium source, mixed with potassium-containing rocks, and then calcined at high temperatures. For example, some research is using solid wastes such as phosphogypsum and phosphogypsum calcium slag instead of limestone as a calcium source to prepare silicon-calcium-potassium soil conditioners.

[0003] This powdered acidic soil conditioner, produced primarily from alkali residue, effectively regulates acidic soils, regulates unbalanced soil nutrient systems, and promotes effective nutrient supply. It also deactivates heavy metal ions, reducing their harmful effects on plants and the environment. It maintains a favorable soil microbial environment and promotes the growth of beneficial microorganisms. By improving the physical, chemical, and biological properties of the soil, it achieves optimal soil properties and enhances soil productivity.

[0004] Currently, the preparation technology of existing soil conditioners has the following problems: First, existing soil conditioners have a significant effect on improving soil structure in the short term, but the long-term effect is unstable; second, existing soil conditioners have the problem of poor improvement effect. If the dosage is too small, the soil improvement effect is not obvious; if the dosage is too large, the cost is increased, resulting in waste and even soil compaction; third, existing soil conditioners are easily inactivated during the preparation or storage process, have a short shelf life, and the effect after storage is unstable. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a soil loosening and root promoting soil conditioner and a preparation method thereof. In order to solve the problems that the long-term effect of the existing soil conditioners is unstable, the soil conditioning effect is not obvious when the dosage is small, and the effect is unstable after storage, the present invention uses a soil loosening improved fermentation matrix, a composite root promoting agent, and a protective stabilizer to mix them. The prepared soil loosening and root promoting soil conditioner has significant soil loosening and root promoting effect, long-term stability, small dosage and obvious effect, and stable conditioning effect after storage.

[0006] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: the present invention proposes a soil conditioner for loosening soil and promoting root growth, and the raw materials for preparing the soil conditioner for loosening soil and promoting root growth specifically include the following components in parts by weight: 32-35 parts of soil-loosening and improved fermentation matrix, 14-18 parts of compound root promoter, 3.5-4.5 parts of fruit shell biochar powder, 2.2-2.4 parts of ferrous sulfate, 2.3-2.6 parts of magnesium sulfate, and 2.8-3.1 parts of dolomite powder.

[0007] Preferably, the raw materials for preparing the soil-loosening and improved fermentation matrix include the following components in parts by weight: 3-4 parts of diatomaceous earth, 3.5-4.5 parts of opal, 2.8-3.6 parts of feather meal, 5.2-5.8 parts of oyster shells, 4.2-4.9 parts of animal feces, 2.2-2.4 parts of peat moss, 1.5-1.8 parts of sedge, 2.1-2.3 parts of silk, 1.1-1.3 parts of fermentation agent, 1.2-1.6 parts of vinyltriethoxysilane, 1.3-1.4 parts of polyacrylic acid, 0.6-0.9 parts of coumarin, and 0.2-0.3 parts of citric acid.

[0008] Preferably, the raw materials for preparing the composite root promoting agent include the following components in parts by weight: 2.5-3.5 parts of broad beans, 2.2-2.4 parts of milk vetch, 1.8-2.4 parts of wheat straw, 1.3-1.6 parts of rapeseed, 1.2-1.4 parts of moss, 0.8-1.3 parts of sargassum, 1.5-1.7 parts of willow leaves, 0.5-0.8 parts of L-arginine, 0.4-0.7 parts of fulvic acid, 0.3-0.5 parts of plant growth hormone, 0.4-0.6 parts of cinnamic acid, 0.4-0.6 parts of L-tryptophan, 0.5-0.8 parts of tea polyphenols, 0.6-0.8 parts of L-proline, 2.3-2.7 parts of polyaspartic acid, 2.4-2.8 parts of acetyl glucosamine, and 0.2-0.3 parts of N-hydroxysuccinimide.

[0009] Preferably, the method for preparing the soil-softened fermentation substrate comprises the following steps: S1. Place diatomaceous earth, opal, feather powder, and oyster shell into a 1.8 kW pulverizer at a temperature of 28°C, a pulverizing time of 15-25 minutes, and a pulverizing speed of 18,000 r / min to obtain a porous powder. S2. Place animal feces, peat moss, sedge, and silk into a 3.3 kW grinder at a grinding temperature of 25-28°C, a grinding speed of 6000 r / min, and a grinding time of 25 min to grind and mix to obtain nutritious organic matter; S3, placing the porous powder prepared in S1, the nutrient organic matter prepared in S2, the fermentation agent, and ultrapure water into a fermentation tank with a power of 9-11 kW, a fermentation speed of 300-330 r / min, a fermentation temperature of 30°C, and a fermentation time of 20-30 days, and obtaining a loose soil matrix after fermentation; S4. Vinyltriethoxysilane, polyacrylic acid, coumarin, citric acid, and anhydrous ethanol are placed in a 2.4 kW reactor at a reaction temperature of 80° C., a reaction rate of 200-400 r / min, and a reaction time of 6 h to form a polymer solution. S5. Place the polymer solution prepared by S4 and the loose soil matrix prepared by S3 into a stirrer with a power of 1.8 kW, the stirring temperature is 28°C, the stirring time is 30-40 min, the stirring speed is 300-500 r / min, mix and adsorb thoroughly, place into a freeze dryer with a power of 2.3-2.8 kW, the freeze drying temperature is -40°C, the freeze drying time is 4 h, and freeze drying is performed to obtain the loose soil improved fermentation matrix.

[0010] Furthermore, in S2, the animal manure consists of earthworm manure, sheep manure, and chicken manure, and the mixing ratio by weight is 2.2:1.8:1.

[0011] Furthermore, in S3, the solid-liquid ratio of the fermentation agent to ultrapure water is 1:100 g / mL, the fermentation agent is composed of flocculant Candida, blue-gray heterothallus, and Pseudomonas paraflavonoids, and the weight mixing ratio is 0.9:1.1:1. The flocculant Candida was purchased from the China General Microorganism Culture Collection Center with a preservation number of CGMCC2.5503, the blue-gray heterothallus was purchased from the China General Microorganism Culture Collection Center with a preservation number of CGMCC4.987, and the Pseudomonas paraflavonoids was purchased from the China General Microorganism Culture Collection Center with a preservation number of CGMCC1.15634.

[0012] Furthermore, in S4, the mass fraction of the polyacrylic acid in anhydrous ethanol is 10%.

[0013] Preferably, the preparation method of the composite root promoting agent specifically comprises the following steps: L1. Place broad beans, astragalus, wheat straw, rapeseed, moss, sargassum, willow leaves, and L-arginine into a 3.3 kW grinder, grind at a temperature of 25-28°C, a grinding speed of 6000 r / min, and a grinding time of 30 min, and mix and grind to obtain root-promoting nutrient powder; L2. Place fulvic acid, phytoalexin, cinnamic acid, L-tryptophan, tea polyphenols, and L-proline in a 1.8 kW stirrer at a stirring temperature of 28°C for 15-20 minutes at a stirring speed of 300-500 r / min to obtain an auxiliary root-promoting component; L3. Place polyaspartic acid, acetyl glucosamine, N-hydroxysuccinimide, and ultrapure water in a 2.4 kW reactor, set the reaction temperature at 90°C, the reaction rate at 20-30 r / min, and the reaction time at 2-4 h to form a complex solution; L4. Put the complex solution prepared by L3, the root-promoting nutrient powder prepared by L1, and the auxiliary root-promoting component prepared by L2 into a stirrer with a power of 1.8 kW, the stirring temperature is 28°C, the stirring time is 25 min, the stirring speed is 300-500 r / min, and after mixing, put them into a vacuum freeze-nano spray dryer with a power of 2.3-2.8 kW, the vacuum degree is -0.05 MPa, the freeze-nano spray drying temperature is -40°C, the freeze-nano spray drying particle size is 100 nm, and the freeze-nano spray drying time is 2.5-3h to obtain a composite root-promoting agent.

[0014] Furthermore, in L3, the mass fraction of the polyaspartic acid in ultrapure water is 12%.

[0015] The present invention also proposes a method for preparing a soil conditioner for loosening soil and promoting root growth, which specifically comprises the following steps: Step 1: Place the fruit shell biochar powder, ferrous sulfate, magnesium sulfate, and dolomite powder into a stirring tank with a power of 1.2-1.5 kW, stir at a temperature of 25-28°C, stir for 20-25 minutes, and stir at a speed of 300-600 r / min to obtain a protective stabilizer; Step 2: Place the loose soil-improved fermentation matrix into the protective stabilizer prepared in step 1, stir at a temperature of 25-28° C., for 15-20 min, at a stirring speed of 500 r / min, and mix to obtain a conditioning component; Step 3: Add the compound root-promoting agent into the conditioning component prepared in step 2, stir at a temperature of 25-28°C, stir for 25-35 min, stir at a speed of 600 r / min, mix well, place under an ultraviolet sterilization lamp with a power of 1.8 kW, an ultraviolet sterilization wavelength of 280 nm, an ultraviolet sterilization temperature of 20°C, and an ultraviolet sterilization time of 10 min, and sterilize by ultraviolet to obtain a soil loosening and root-promoting soil conditioner.

[0016] The beneficial effects achieved by the present invention are as follows: The present invention adopts diatomaceous earth, opal rock, feather powder and oyster shell for powdering. The porous structure of the obtained porous powder provides a large number of tiny pores, which are interconnected, so that air can enter the soil more smoothly, rainwater or irrigation water can penetrate deeper into the soil more easily, and water loss on the surface is reduced. The porous structure has a large specific surface area and adsorption capacity, and can adsorb particulate matter such as organic matter and minerals in the soil. The adsorbed particulate matter adheres to each other within the framework of the porous structure to form a stable soil aggregate structure. Microorganisms can better reproduce and metabolize in these pores. The nutritious organic matter obtained by crushing and mixing earthworm castings, sheep manure, chicken manure, peat moss, sedge and silk contains rich nutrients, which can be adsorbed and retained by the soil, reducing nutrient loss, improving soil fertility, improving soil texture, making the soil looser, reducing soil compaction, and thus improving soil air permeability and water retention. The fermentation agent containing flocculant Candida, blue-gray heterowalled actinomycetes, and paraflavour Pseudomonas is used to ferment porous powder and nutritious organic matter, converting them into nutrients that are easier for plants to absorb. In the process of decomposing organic matter, the fermentation agent will produce a large amount of biologically active substances, such as humic acid, polysaccharides, etc., which improve the soil aggregate structure, increase the porosity and aeration of the soil, make the soil more loose, and promote the growth and development of plant roots. The obtained loose soil matrix also contains rich trace elements, vinyl triethoxysilane, polyacrylic acid, and coumarin. Under the catalytic action of citric acid, a polymer with rich pore structure and high specific surface area is formed. There are a large number of adsorption sites on the surface, and the carboxyl and hydroxyl groups in the polymer Functional groups such as bases and aromatic rings have strong adsorption capacity. When mixed with the loose soil matrix, they can fix the active ingredients and prevent their loss, thereby improving the stability and utilization rate of the active ingredients. The high specific surface area and adsorption capacity of the polymer can also adsorb soil particles to form a stable aggregate structure, increase the porosity and aeration of the soil, make the soil looser, provide a good living environment for soil microorganisms, promote the reproduction and metabolism of microorganisms, further improve the aggregate structure and fertility of the soil, fix nutrients and moisture in the soil, reduce nutrient loss and soil compaction, and the loose soil improved fermentation matrix obtained by freeze-drying can be slowly released in the soil, prolonging the action time of the active ingredients and improving their long-term effectiveness.Broad beans, astragalus, wheat straw, rapeseed, moss, sargassum, and willow leaves are mixed and crushed, rich in organic matter and various nutrients, which can provide rich nutrients for plant roots and promote the growth and development of root systems. The decomposition of root-promoting nutrient powder in the soil can increase the organic matter content of the soil, improve the soil aggregate structure, increase the porosity and aeration of the soil, further promote the reproduction and metabolism of soil microorganisms, and promote the growth and development of plant roots. L-arginine is an important precursor for the synthesis of plant growth hormones and can promote the synthesis of cytokinins and auxins in plants. Fulvic acid, phytoalexin, cinnamic acid, L-tryptophan, tea polyphenols, and L-proline are mixed to obtain auxiliary root-promoting components, which can increase the effectiveness of nutrients in the soil through chelation and regulate the pH value of the soil, enhance the ability of crop roots to absorb nutrients and water, promote the synthesis of auxins in plants, and enhance the stress resistance of plants, thereby promoting plant growth. The invention can promote the efficient growth of plant roots by cross-linking polyaspartic acid and acetyl glucosamine under the catalytic action of N-hydroxysuccinimide. The carboxyl group of polyaspartic acid and the amino group of acetyl glucosamine are activated by N-hydroxysuccinimide to form an amide bond, thereby constructing a complex with a three-dimensional network structure. The complex is mixed with root-promoting nutrient powder and auxiliary root-promoting components. After freeze-nano spray drying, the effective components are encapsulated to obtain a composite root-promoting agent that can significantly promote the growth of plant roots. The porous structure of the protective stabilizer obtained by mixing fruit shell biochar powder, ferrous sulfate, magnesium sulfate, and dolomite powder can provide a relatively stable microenvironment for the effective components, prevent the effective components from being oxidized, and help maintain the physical state and chemical properties of the effective components. The soil-loosening and fermentation matrix is ​​mixed with the composite root-promoting agent to produce a soil-loosening and root-promoting soil conditioner with significant loosening and root-promoting effects, long-term stability, small dosage and significant effects, and stable conditioning effects after storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the present invention or the technical solutions in the prior art, the following will be described in a clear and easy-to-understand manner with reference to the accompanying drawings. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a graph showing the soil bulk density results of the experimental field described in Experimental Example 1 of the present invention; Figure 2 This is a graph showing the root growth results of wheat in the experimental field described in Experimental Example 2 of the present invention; Figure 3 This is the result diagram of wheat root weight in the experimental field described in Experimental Example 2 of the present invention; Figure 4 This is a graph showing the soil bulk density results of the experimental field after the reduced dosage described in Experimental Example 3 of the present invention; Figure 5This is a graph showing the root growth results of wheat in the experimental field after the reduced dosage described in Experimental Example 3 of the present invention; Figure 6 This is a graph showing the root weight of wheat in the experimental field after the reduced dosage described in Experimental Example 3 of the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all 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.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those familiar to those skilled in the art. Furthermore, any methods and materials similar or equivalent to those described herein can be applied to the present invention. The preferred embodiments and materials described herein are for illustrative purposes only and are not intended to limit the scope of this application.

[0021] The experimental methods in the following examples, unless otherwise specified, are conventional methods; the test materials and test strains used in the following examples, unless otherwise specified, are purchased from commercial channels.

[0022] Example 1: This example provides a soil conditioner for loosening soil and promoting root growth and a preparation method thereof. The soil conditioner for loosening soil and promoting root growth comprises the following components in parts by weight: 32 parts of soil-loosening and improved fermentation matrix, 14 parts of compound root promoter, 3.5 parts of fruit shell biochar powder, 2.2 parts of ferrous sulfate, 2.3 parts of magnesium sulfate, and 2.8 parts of dolomite powder.

[0023] The raw materials for preparing the soil-loosening and improved fermentation matrix include the following components in parts by weight: 3 parts of diatomaceous earth, 3.5 parts of opal, 2.8 parts of feather powder, 5.2 parts of oyster shells, 4.2 parts of animal feces, 2.2 parts of peat moss, 1.5 parts of sedge, 2.1 parts of silk, 1.1 parts of fermentation agent, 1.2 parts of vinyltriethoxysilane, 1.3 parts of polyacrylic acid, 0.6 parts of coumarin, and 0.2 parts of citric acid.

[0024] The raw materials for preparing the composite root promoting agent include the following components in parts by weight: 2.5 parts of broad beans, 2.2 parts of milk vetch, 1.8 parts of wheat straw, 1.3 parts of rapeseed, 1.2 parts of seaweed, 0.8 parts of sargassum, 1.5 parts of willow leaves, 0.5 parts of L-arginine, 0.4 parts of fulvic acid, 0.3 parts of phytoalexin, 0.4 parts of cinnamic acid, 0.4 parts of L-tryptophan, 0.5 parts of tea polyphenols, 0.6 parts of L-proline, 2.3 parts of polyaspartic acid, 2.4 parts of acetyl glucosamine, and 0.2 parts of N-hydroxysuccinimide.

[0025] The method for preparing the soil-loosening and fermentation-improving substrate specifically comprises the following steps: S1. Place diatomaceous earth, opal, feather powder, and oyster shell into a 1.8 kW powder grinder at a temperature of 28°C, a powdering time of 15 min, and a powdering speed of 18,000 r / min to obtain a porous powder. S2. Animal feces, peat moss, sedge, and silk were placed in a 3.3 kW grinder at a grinding temperature of 25°C, a grinding speed of 6000 r / min, and a grinding time of 25 min to grind and mix to obtain nutritious organic matter; S3, placing the porous powder prepared in S1, the nutrient organic matter prepared in S2, the fermentation agent, and ultrapure water into a fermentation tank with a power of 9 kW, a fermentation speed of 300 r / min, a fermentation temperature of 30°C, and a fermentation time of 20 days to obtain a loose soil matrix; S4. Vinyltriethoxysilane, polyacrylic acid, coumarin, citric acid, and anhydrous ethanol were placed in a 2.4 kW reactor at a reaction temperature of 80°C, a reaction rate of 200 r / min, and a reaction time of 6 h to form a polymer solution. S5. The polymer solution prepared by S4 and the loose soil matrix prepared by S3 were placed in a stirrer with a power of 1.8 kW, the stirring temperature was 28°C, the stirring time was 30 min, the stirring speed was 300 r / min, and they were fully mixed and adsorbed. The mixture was placed in a freeze dryer with a power of 2.3 kW, the freeze drying temperature was -40°C, the freeze drying time was 4 h, and freeze drying was performed to obtain the loose soil improved fermentation matrix.

[0026] In S2, the animal manure consists of earthworm manure, sheep manure, and chicken manure, and the mixing ratio by weight is 2.2:1.8:1.

[0027] In S3, the solid-liquid ratio of the fermentation agent to ultrapure water is 1:100 g / mL, the fermentation agent is composed of flocculant Candida, blue-gray heterothallus, and Pseudomonas paraflavonoids, and the weight mixing ratio is 0.9:1.1:1. The flocculant Candida was purchased from the China General Microorganism Culture Collection Center with a preservation number of CGMCC2.5503, the blue-gray heterothallus was purchased from the China General Microorganism Culture Collection Center with a preservation number of CGMCC4.987, and the Pseudomonas paraflavonoids was purchased from the China General Microorganism Culture Collection Center with a preservation number of CGMCC1.15634.

[0028] In S4, the mass fraction of the polyacrylic acid in anhydrous ethanol is 10%.

[0029] The preparation method of the composite root promoting agent specifically comprises the following steps: L1. Place broad beans, astragalus, wheat straw, rapeseed, moss, sargassum, willow leaves, and L-arginine into a 3.3 kW grinder, grind at a temperature of 25°C, a grinding speed of 6000 r / min, and a grinding time of 30 min, and mix and grind to obtain root-promoting nutrient powder; L2. Place fulvic acid, phytoalexin, cinnamic acid, L-tryptophan, tea polyphenols, and L-proline into a 1.8 kW stirrer at a stirring temperature of 28°C for 15 min at a stirring speed of 300 r / min to obtain an auxiliary root-promoting component; L3, placing polyaspartic acid, acetyl glucosamine, N-hydroxysuccinimide, and ultrapure water in a 2.4 kW reactor, reacting at a temperature of 90°C, a reaction rate of 20 r / min, and a reaction time of 2 h to form a complex solution; L4, put the complex solution prepared by L3, the root-promoting nutrient powder prepared by L1, and the auxiliary root-promoting component prepared by L2 into a stirrer with a power of 1.8 kW, the stirring temperature is 28°C, the stirring time is 25 min, the stirring speed is 300 r / min, and after mixing, put them into a vacuum freeze-nano spray dryer with a power of 2.3 kW, the vacuum degree is -0.05 MPa, the freeze-nano spray drying temperature is -40°C, the freeze-nano spray drying particle size is 100 nm, and the freeze-nano spray drying time is 2.5 h to obtain a composite root-promoting agent.

[0030] In L3, the mass fraction of the polyaspartic acid in ultrapure water is 12%.

[0031] This embodiment also provides a method for preparing a soil conditioner for loosening soil and promoting root growth, which specifically comprises the following steps: Step 1: Place the fruit shell biochar powder, ferrous sulfate, magnesium sulfate, and dolomite powder into a stirring tank with a power of 1.2 kW, stir at a temperature of 25°C, stir for 20 minutes, and stir at a speed of 300 r / min to obtain a protective stabilizer; Step 2: Place the loose soil-improved fermentation matrix into the protective stabilizer prepared in step 1, stir at a temperature of 25° C., for 15 min, at a stirring speed of 500 r / min, and mix to obtain a conditioning component; Step 3: Add the compound root-promoting agent into the conditioning component prepared in step 2, stir at a temperature of 25°C, stir for 25 min, stir at a speed of 600 r / min, mix well, place under an ultraviolet sterilization lamp with a power of 1.8 kW, an ultraviolet sterilization wavelength of 280 nm, an ultraviolet sterilization temperature of 20°C, and an ultraviolet sterilization time of 10 min, and perform ultraviolet sterilization to obtain a soil loosening and root-promoting soil conditioner.

[0032] Example 2: This example provides a soil conditioner for loosening and root-promoting soil and a preparation method thereof. The soil conditioner for loosening and root-promoting soil comprises the following components in parts by weight: 33 parts of soil-loosening and improved fermentation matrix, 16 parts of compound root promoter, 4 parts of fruit shell biochar powder, 2.3 parts of ferrous sulfate, 2.4 parts of magnesium sulfate, and 2.9 parts of dolomite powder.

[0033] The raw materials for preparing the soil-loosening and improved fermentation matrix include the following components in parts by weight: 3.5 parts of diatomaceous earth, 4 parts of opal, 3.2 parts of feather powder, 5.4 parts of oyster shells, 4.5 parts of animal feces, 2.3 parts of peat moss, 1.7 parts of sedge, 2.2 parts of silk, 1.2 parts of fermentation agent, 1.4 parts of vinyltriethoxysilane, 1.3 parts of polyacrylic acid, 0.7 parts of coumarin, and 0.2 parts of citric acid.

[0034] The raw materials for preparing the composite root promoting agent include the following components in parts by weight: 3 parts of broad beans, 2.3 parts of milk vetch, 2.1 parts of wheat straw, 1.5 parts of rapeseed, 1.3 parts of seaweed, 1.2 parts of sargassum, 1.6 parts of willow leaves, 0.7 parts of L-arginine, 0.6 parts of fulvic acid, 0.4 parts of phytoalexin, 0.5 parts of cinnamic acid, 0.5 parts of L-tryptophan, 0.6 parts of tea polyphenols, 0.7 parts of L-proline, 2.5 parts of polyaspartic acid, 2.6 parts of acetyl glucosamine, and 0.3 parts of N-hydroxysuccinimide.

[0035] The method for preparing the soil-loosening and fermentation-improving substrate specifically comprises the following steps: S1. Place diatomaceous earth, opal, feather powder, and oyster shell into a 1.8 kW powder grinder at a temperature of 28°C, a powdering time of 20 min, and a powdering speed of 18,000 r / min to obtain a porous powder. S2. Animal feces, peat moss, sedge, and silk were placed in a 3.3 kW grinder at a grinding temperature of 26°C, a grinding speed of 6000 r / min, and a grinding time of 25 min to grind and mix to obtain nutritious organic matter; S3, placing the porous powder prepared in S1, the nutrient organic matter prepared in S2, the fermentation agent, and ultrapure water into a fermentation tank with a power of 10 kW, a fermentation speed of 320 r / min, a fermentation temperature of 30°C, and a fermentation time of 25 days to obtain a loose soil matrix; S4. Vinyltriethoxysilane, polyacrylic acid, coumarin, citric acid, and anhydrous ethanol are placed in a 2.4 kW reactor at a reaction temperature of 80°C, a reaction rate of 300 r / min, and a reaction time of 6 h to form a polymer solution. S5. The polymer solution prepared by S4 and the loose soil matrix prepared by S3 were placed in a stirrer with a power of 1.8 kW, the stirring temperature was 28°C, the stirring time was 35 min, the stirring speed was 400 r / min, and they were fully mixed and adsorbed. The mixture was placed in a freeze dryer with a power of 2.6 kW, the freeze drying temperature was -40°C, the freeze drying time was 4 h, and freeze drying was performed to obtain the loose soil improved fermentation matrix.

[0036] In S2, the animal manure consists of earthworm manure, sheep manure, and chicken manure, and the mixing ratio by weight is 2.2:1.8:1.

[0037] In S3, the solid-liquid ratio of the fermentation agent to ultrapure water is 1:100 g / mL, the fermentation agent is composed of flocculant Candida, blue-gray heterothallus, and Pseudomonas paraflavonoids, and the weight mixing ratio is 0.9:1.1:1. The flocculant Candida was purchased from the China General Microorganism Culture Collection Center with a preservation number of CGMCC2.5503, the blue-gray heterothallus was purchased from the China General Microorganism Culture Collection Center with a preservation number of CGMCC4.987, and the Pseudomonas paraflavonoids was purchased from the China General Microorganism Culture Collection Center with a preservation number of CGMCC1.15634.

[0038] In S4, the mass fraction of the polyacrylic acid in anhydrous ethanol is 10%.

[0039] The preparation method of the composite root promoting agent specifically comprises the following steps: L1. Place broad beans, astragalus, wheat straw, rapeseed, moss, sargassum, willow leaves, and L-arginine into a 3.3 kW grinder, grind at a temperature of 27°C, a grinding speed of 6000 r / min, and a grinding time of 30 min, and mix and grind to obtain root-promoting nutrient powder; L2. Place fulvic acid, phytoalexin, cinnamic acid, L-tryptophan, tea polyphenols, and L-proline into a 1.8 kW stirrer at a stirring temperature of 28°C for 18 min at a stirring speed of 400 r / min to obtain an auxiliary root-promoting component; L3, placing polyaspartic acid, acetyl glucosamine, N-hydroxysuccinimide, and ultrapure water in a 2.4 kW reactor, reacting at a temperature of 90°C, a reaction rate of 25 r / min, and a reaction time of 3 h to form a complex solution; L4, put the complex solution prepared by L3, the root-promoting nutrient powder prepared by L1, and the auxiliary root-promoting component prepared by L2 into a stirrer with a power of 1.8 kW, the stirring temperature is 28°C, the stirring time is 25 min, the stirring speed is 400 r / min, and after mixing, put them into a vacuum freeze-nano spray dryer with a power of 2.6 kW, the vacuum degree is -0.05 MPa, the freeze-nano spray drying temperature is -40°C, the freeze-nano spray drying particle size is 100 nm, and the freeze-nano spray drying time is 2.8 h to obtain a composite root-promoting agent.

[0040] In L3, the mass fraction of the polyaspartic acid in ultrapure water is 12%.

[0041] This embodiment also provides a method for preparing a soil conditioner for loosening soil and promoting root growth, which specifically comprises the following steps: Step 1: Place the fruit shell biochar powder, ferrous sulfate, magnesium sulfate, and dolomite powder into a stirring tank with a power of 1.3 kW, stir at a temperature of 26°C, stir for 23 minutes, and stir at a speed of 500 r / min to obtain a protective stabilizer; Step 2: Add the loose soil-improved fermentation matrix into the protective stabilizer prepared in step 1, stir at a temperature of 27° C., for 18 min, at a stirring speed of 500 r / min, and mix to obtain a conditioning component; Step 3: Add the compound root-promoting agent into the conditioning component prepared in step 2, stir at a temperature of 26°C, stir for 30 min, stir at a speed of 600 r / min, mix well, place under an ultraviolet sterilization lamp with a power of 1.8 kW, an ultraviolet sterilization wavelength of 280 nm, an ultraviolet sterilization temperature of 20°C, and an ultraviolet sterilization time of 10 min, and sterilize by ultraviolet to obtain a soil loosening and root-promoting soil conditioner.

[0042] Example 3: This example provides a soil conditioner for loosening soil and promoting root growth and a preparation method thereof. The soil conditioner for loosening soil and promoting root growth comprises the following components in parts by weight: 35 parts of soil-loosening and improved fermentation matrix, 18 parts of compound root promoter, 4.5 parts of fruit shell biochar powder, 2.4 parts of ferrous sulfate, 2.6 parts of magnesium sulfate, and 3.1 parts of dolomite powder.

[0043] The raw materials for preparing the soil-loosening and improved fermentation matrix include the following components in parts by weight: 4 parts of diatomaceous earth, 4.5 parts of opal, 3.6 parts of feather powder, 5.8 parts of oyster shells, 4.9 parts of animal feces, 2.4 parts of peat moss, 1.8 parts of sedge, 2.3 parts of silk, 1.3 parts of fermentation agent, 1.6 parts of vinyltriethoxysilane, 1.4 parts of polyacrylic acid, 0.9 part of coumarin, and 0.3 part of citric acid.

[0044] The raw materials for preparing the composite root promoting agent include the following components in parts by weight: 3.5 parts of broad beans, 2.4 parts of milk vetch, 2.4 parts of wheat straw, 1.6 parts of rapeseed, 1.4 parts of seaweed, 1.3 parts of sargassum, 1.7 parts of willow leaves, 0.8 parts of L-arginine, 0.7 parts of fulvic acid, 0.5 parts of phytoalexin, 0.6 parts of cinnamic acid, 0.6 parts of L-tryptophan, 0.8 parts of tea polyphenols, 0.8 parts of L-proline, 2.7 parts of polyaspartic acid, 2.8 parts of acetyl glucosamine, and 0.3 parts of N-hydroxysuccinimide.

[0045] The method for preparing the soil-loosening and fermentation-improving substrate specifically comprises the following steps: S1. Place diatomaceous earth, opal, feather powder, and oyster shell into a 1.8 kW pulverizer at a temperature of 28°C, a pulverizing time of 25 min, and a pulverizing speed of 18,000 r / min to obtain a porous powder. S2. Place animal feces, peat moss, sedge, and silk into a 3.3 kW grinder at a grinding temperature of 28°C, a grinding speed of 6000 r / min, and a grinding time of 25 min to grind and mix to obtain nutritious organic matter; S3, placing the porous powder prepared in S1, the nutrient organic matter prepared in S2, the fermentation agent, and ultrapure water into a fermentation tank with a power of 11 kW, a fermentation speed of 330 r / min, a fermentation temperature of 30°C, and a fermentation time of 30 days to obtain a loose soil matrix; S4. Vinyltriethoxysilane, polyacrylic acid, coumarin, citric acid, and anhydrous ethanol are placed in a 2.4 kW reactor at a reaction temperature of 80°C, a reaction rate of 400 r / min, and a reaction time of 6 h to form a polymer solution. S5. The polymer solution prepared by S4 and the loose soil matrix prepared by S3 were placed in a stirrer with a power of 1.8 kW, the stirring temperature was 28°C, the stirring time was 40 min, the stirring speed was 500 r / min, and they were fully mixed and adsorbed. The mixture was placed in a freeze dryer with a power of 2.8 kW, the freeze drying temperature was -40°C, the freeze drying time was 4 h, and freeze drying was performed to obtain the loose soil improved fermentation matrix.

[0046] In S2, the animal manure consists of earthworm manure, sheep manure, and chicken manure, and the mixing ratio by weight is 2.2:1.8:1.

[0047] In S3, the solid-liquid ratio of the fermentation agent to ultrapure water is 1:100 g / mL, the fermentation agent is composed of flocculant Candida, blue-gray heterothallus, and Pseudomonas paraflavonoids, and the weight mixing ratio is 0.9:1.1:1. The flocculant Candida was purchased from the China General Microorganism Culture Collection Center with a preservation number of CGMCC2.5503, the blue-gray heterothallus was purchased from the China General Microorganism Culture Collection Center with a preservation number of CGMCC4.987, and the Pseudomonas paraflavonoids was purchased from the China General Microorganism Culture Collection Center with a preservation number of CGMCC1.15634.

[0048] In S4, the mass fraction of the polyacrylic acid in anhydrous ethanol is 10%.

[0049] The preparation method of the composite root promoting agent specifically comprises the following steps: L1. Place broad beans, astragalus, wheat straw, rapeseed, moss, sargassum, willow leaves, and L-arginine into a 3.3 kW grinder, grind at a temperature of 28°C, a grinding speed of 6000 r / min, and a grinding time of 30 min, and mix and grind to obtain root-promoting nutrient powder; L2. Place fulvic acid, phytoalexin, cinnamic acid, L-tryptophan, tea polyphenols, and L-proline into a 1.8 kW stirrer at a stirring temperature of 28°C for 20 min at a stirring speed of 500 r / min to obtain an auxiliary root-promoting component; L3, placing polyaspartic acid, acetyl glucosamine, N-hydroxysuccinimide, and ultrapure water in a 2.4 kW reactor, reacting at a temperature of 90°C, a reaction rate of 30 r / min, and a reaction time of 4 h to form a complex solution; L4, put the complex solution prepared by L3, the root-promoting nutrient powder prepared by L1, and the auxiliary root-promoting component prepared by L2 into a stirrer with a power of 1.8 kW, the stirring temperature is 28°C, the stirring time is 25 min, the stirring speed is 500 r / min, and after mixing, put them into a vacuum freeze-nano spray dryer with a power of 2.8 kW, the vacuum degree is -0.05 MPa, the freeze-nano spray drying temperature is -40°C, the freeze-nano spray drying particle size is 100 nm, and the freeze-nano spray drying time is 3 h to obtain a composite root-promoting agent.

[0050] In L3, the mass fraction of the polyaspartic acid in ultrapure water is 12%.

[0051] This embodiment also provides a method for preparing a soil conditioner for loosening soil and promoting root growth, which specifically comprises the following steps: Step 1: Place the fruit shell biochar powder, ferrous sulfate, magnesium sulfate, and dolomite powder into a stirring tank with a power of 1.5 kW, stir at a temperature of 28°C, stir for 25 minutes, and stir at a speed of 600 r / min to obtain a protective stabilizer; Step 2: Add the loose soil-improved fermentation matrix into the protective stabilizer prepared in step 1, stir at a temperature of 28° C., a stirring time of 20 min, and a stirring speed of 500 r / min to mix to obtain a conditioning component; Step 3: Add the compound root-promoting agent into the conditioning component prepared in step 2, stir at a temperature of 28°C, stir for 35 min, stir at a speed of 600 r / min, mix well, place under an ultraviolet sterilization lamp with a power of 1.8 kW, an ultraviolet sterilization wavelength of 280 nm, an ultraviolet sterilization temperature of 20°C, and an ultraviolet sterilization time of 10 min, and sterilize by ultraviolet to obtain a soil loosening and root-promoting soil conditioner.

[0052] Comparative Example 1: This comparative example provides a composite soil conditioner and a preparation method thereof. The only difference from Example 1 is that the added soil loosening and improved fermentation matrix does not contain a polymer solution, and the remaining components, component contents, and method steps are the same as those in Example 1.

[0053] Comparative Example 2: This comparative example provides a composite soil conditioner and a preparation method thereof. The only difference from Example 1 is that the added composite root-promoting agent does not contain a complex solution, and the remaining components, component contents, and method steps are the same as those in Example 1.

[0054] Experimental Example 1: Test on determination of soil loosening efficacy and long-term effect.

[0055] The test steps for determining the soil loosening efficacy and long-term effect of the soil loosening and root-promoting soil conditioner prepared in Examples 1-3 of the present invention are as follows: (1) A 6-mu test field was opened, which was divided into a 3-mu embodiment group, a 2-mu comparative group, and a 1-mu control group. The application amount of the soil loosening and root-promoting soil conditioner prepared in Examples 1-3 was 10 kg / mu. The soil loosening and root-promoting soil conditioner prepared in Examples 1-3 was mixed with base fertilizer and ultrapure water in a weight ratio of 1:2:10, and after complete dissolution, it was applied to the soil of the experimental fields of Groups 1-3 of Examples. The application amount of the composite soil conditioner prepared in Comparative Example 1-2 was 10 kg / mu. The composite soil conditioner prepared in Comparative Example 1-2 was mixed with base fertilizer and ultrapure water in a weight ratio of 1:2:10, and after complete dissolution, it was applied to the soil of the experimental fields of Groups 1-2 of Comparative Example. The application amount of the commercially available ordinary soil conditioner (purchased from Nanning Yihua Trading Co., Ltd.) in the control group was 10 kg / mu, the control group commercially available common soil conditioner was mixed with base fertilizer and ultrapure water at a weight ratio of 1:2:10, and after complete dissolution, it was applied to the soil of the control group experimental field. Other field management measures of each group of experimental fields were the same; (2) After 30 days of application of the soil loosening and root-promoting soil conditioner prepared in Examples 1-3, the composite soil conditioner prepared in Comparative Examples 1-2, and the commercially available ordinary soil conditioner in the control group, five points of each experimental field were sampled, and the soil layer at a depth of 10 cm was collected. The soil bulk density was measured separately, and the average value was taken to obtain the soil bulk density of each experimental field, and the results were recorded; (3) The soil conditioners for loosening and promoting root growth prepared in Examples 1-3, the composite soil conditioners prepared in Comparative Examples 1-2, and a commercially available ordinary soil conditioner for the control group (purchased from Nanning Yihua Trading Co., Ltd.) were stored for 120 days at a temperature of 28°C and a humidity of 60% to obtain the soil conditioners for loosening and promoting root growth prepared in Examples 1-3 after storage, the composite soil conditioners prepared in Comparative Examples 1-2 after storage, and the commercially available ordinary soil conditioner for the control group after storage; (4) A 6-mu test field was opened, which was divided into a 3-mu embodiment group, a 2-mu comparison group, and a 1-mu control group. The application amount of the soil conditioner for loosening and promoting root growth prepared in Examples 1-3 after storage was 10 kg / mu. The soil conditioner for loosening and promoting root growth prepared in Examples 1-3 after storage was mixed with base fertilizer and ultrapure water in a weight ratio of 1:2:10, and after complete dissolution, it was applied to the soil of the experimental fields of Groups 1-3 of Examples. The application amount of the composite soil conditioner prepared in Comparative Example 1-2 after storage was 10 kg / mu. The composite soil conditioner prepared in Comparative Example 1-2 after storage was mixed with base fertilizer and ultrapure water in a weight ratio of 1:2:10, and after complete dissolution, it was applied to the soil of the experimental fields of Groups 1-2 of Comparative Example. The application amount of the commercially available ordinary soil conditioner in the control group after storage was 10 kg / mu. kg / mu, the commercially available common soil conditioner of the control group after storage was mixed with base fertilizer and ultrapure water at a weight ratio of 1:2:10, and after complete dissolution, it was applied to the soil of the experimental field of the control group. Other field management measures of the experimental fields of each group were the same; (5) After 30 days of application of the soil loosening and root promoting soil conditioner prepared in Examples 1-3 after storage, the composite soil conditioner prepared in Comparative Examples 1-2 after storage, and the commercially available ordinary soil conditioner for the control group after storage, five points of sampling were conducted on each group of experimental fields, and the soil layer at a depth of 10 cm was collected. The bulk density of the soil after storage was measured separately, and the average value was taken to obtain the bulk density of the soil after storage for each group of experimental fields, and the results were recorded.

[0056] Result analysis: Soil bulk density refers to the mass of dry soil per unit volume. Soil bulk density reflects soil structure, air permeability, water permeability, and water retention capacity. Lower soil bulk density indicates better soil structure, air permeability, and water permeability. Figure 1 The soil bulk density results of the experimental field described in Experimental Example 1 of the present invention are shown in the figure. As shown in the figure, the soil loosening and root-promoting soil conditioners prepared in Examples 1-3 were mixed with base fertilizer and ultrapure water respectively. After complete dissolution, they were applied to the soil of the experimental fields of Examples 1-3. After 30 days, the soil bulk density of the experimental fields of Examples 1-3 was 1.24 g / cm 3 , 1.19 g / cm 3 , 1.15 g / cm 3 The soil conditioners prepared in Examples 1-3 after storage were mixed with base fertilizer and ultrapure water respectively. After complete dissolution, they were applied to the soil in the experimental fields of Examples 1-3. After 30 days, the bulk density of the soil in the experimental fields of Examples 1-3 was 1.27 g / cm 3 , 1.21 g / cm 3 , 1.16 g / cm 3 The composite soil conditioner prepared in Comparative Examples 1-2 was mixed with base fertilizer and ultrapure water respectively. After complete dissolution, it was applied to the soil of the experimental fields of Comparative Examples 1-2. After 30 days, the bulk density of the soil in the experimental fields of Comparative Examples 1-2 was 1.34 g / cm 3 , 1.27 g / cm 3 The composite soil conditioner prepared in Comparative Examples 1-2 after storage was mixed with base fertilizer and ultrapure water respectively. After complete dissolution, it was applied to the soil of the experimental fields of Comparative Examples 1-2. After 30 days, the bulk density of the soil in the experimental fields of Comparative Examples 1-2 was 1.37 g / cm 3 , 1.30 g / cm 3 The control group commercially available common soil conditioner was mixed with base fertilizer and ultrapure water, and after complete dissolution, it was applied to the soil of the control group experimental field. After 30 days, the bulk density of the soil in the control group experimental field was 1.46 g / cm 3After storage, the commercially available common soil conditioner of the control group was mixed with base fertilizer and ultrapure water. After complete dissolution, it was applied to the soil of the control group experimental field. After 30 days, the bulk density of the soil in the control group experimental field was 1.54 g / cm 3 , which shows that the soil loosening and root-promoting soil conditioner prepared by the present invention has a more obvious soil loosening effect compared with conventional conditioners, is beneficial to the growth and yield increase of crops, and the soil loosening effect is long-lasting and stable.

[0057] Experimental Example 2: Root-promoting efficacy and long-term effect determination test.

[0058] The test steps for determining the root-promoting efficacy and long-term effect of the soil-loosening and root-promoting soil conditioner prepared in Examples 1-3 of the present invention are as follows: (1) A 6-mu test field was opened and wheat seeds were planted in all of them. The fields were divided into 3 mu of embodiment group, 2 mu of comparison group, and 1 mu of control group. The application amount of the soil conditioner for loosening soil and promoting rooting prepared in Examples 1-3 was 10 kg / mu. The soil conditioner for loosening soil and promoting rooting prepared in Examples 1-3 was mixed with base fertilizer and ultrapure water in a weight ratio of 1:2:10, and after being completely dissolved, it was applied to the soil of the experimental fields of Groups 1-3 of Examples. The application amount of the composite soil conditioner prepared in Comparative Example 1-2 was 10 kg / mu. The composite soil conditioner prepared in Comparative Example 1-2 was mixed with base fertilizer and ultrapure water in a weight ratio of 1:2:10, and after being completely dissolved, it was applied to the soil of the experimental fields of Groups 1-2 of Comparative Example. The application amount of the commercially available ordinary soil conditioner (purchased from Nanning Yihua Trading Co., Ltd.) in the control group was 10 kg / mu. kg / mu, the control group commercially available common soil conditioner was mixed with base fertilizer and ultrapure water at a weight ratio of 1:2:10, and after complete dissolution, it was applied to the soil of the control group experimental field. Other field management measures of each group of experimental fields were the same; (2) After 130 days of application of the soil loosening and root-promoting soil conditioner prepared in Examples 1-3, the composite soil conditioner prepared in Comparative Examples 1-2, and the commercially available ordinary soil conditioner in the control group, the root length and root dry weight of the wheat planted in each experimental field were measured. Ten replicates were taken from each group, and the average value was taken to record the results. (3) The soil conditioners for loosening and promoting root growth prepared in Examples 1-3, the composite soil conditioners prepared in Comparative Examples 1-2, and a commercially available ordinary soil conditioner for the control group (purchased from Nanning Yihua Trading Co., Ltd.) were stored for 120 days at a temperature of 28°C and a humidity of 60% to obtain the soil conditioners for loosening and promoting root growth prepared in Examples 1-3 after storage, the composite soil conditioners prepared in Comparative Examples 1-2 after storage, and the commercially available ordinary soil conditioner for the control group after storage; (4) A 6-mu test field was opened and wheat seeds were planted in all of them. The fields were divided into 3 mu of embodiment group, 2 mu of comparison group, and 1 mu of control group. The application amount of the soil conditioner for loosening soil and promoting root growth prepared in Example 1-3 after storage was 10 kg / mu. The soil conditioner for loosening soil and promoting root growth prepared in Example 1-3 after storage was mixed with base fertilizer and ultrapure water in a weight ratio of 1:2:10, and after complete dissolution, it was applied to the soil of the experimental fields of Example 1-3. The application amount of the composite soil conditioner prepared in Comparative Example 1-2 after storage was 10 kg / mu. The composite soil conditioner prepared in Comparative Example 1-2 after storage was mixed with base fertilizer and ultrapure water in a weight ratio of 1:2:10, and after complete dissolution, it was applied to the soil of the experimental fields of Comparative Example 1-2. The application amount of the commercially available ordinary soil conditioner in the control group after storage was 10 kg / mu. kg / mu, the commercially available common soil conditioner of the control group after storage was mixed with base fertilizer and ultrapure water at a weight ratio of 1:2:10, and after complete dissolution, it was applied to the soil of the experimental field of the control group. Other field management measures of the experimental fields of each group were the same; (5) After 130 days of application of the soil conditioner for loosening and promoting roots prepared in Examples 1-3 after storage, the composite soil conditioner prepared in Comparative Examples 1-2 after storage, and the commercially available ordinary soil conditioner for the control group after storage, the root length and root dry weight of the wheat planted in each experimental field were measured. Ten replicates were taken from each group, and the average value was taken to record the results.

[0059] Result analysis: Figure 2 This is the result diagram of wheat root growth in the experimental field described in Experimental Example 2 of the present invention. Figure 3This is the result diagram of the root weight of wheat in the experimental field described in Experimental Example 2 of the present invention. As shown in the figure, the soil conditioners for loosening and promoting roots prepared in Examples 1-3 were mixed with base fertilizer and ultrapure water, respectively. After complete dissolution, they were applied to the soil of the experimental fields of Example 1-3 groups where wheat seeds were planted. After 130 days, the root lengths of the wheat planted in the experimental fields of Example 1-3 were 152.2 cm, 156.5 cm, and 160.4 cm, respectively, and the root dry weights were 168.3 g, 173.5 g, and 178.4 g, respectively. The soil conditioners for loosening and promoting roots prepared in Examples 1-3 after storage were mixed with base fertilizer and ultrapure water, respectively. After complete dissolution, they were applied to the soil of the experimental fields of Example 1-3 groups where wheat seeds were planted. After 130 days, the root lengths of the wheat planted in the experimental fields of Example 1-3 were 150.3 cm, 154.3 cm, and 158.2 cm, respectively, and the root dry weights were 166.5 g, 172.0 g, 176.5 g, respectively. g, the composite soil conditioner prepared in comparative example 1-2 was mixed with base fertilizer and ultrapure water respectively, and after complete dissolution, it was applied to the soil of the experimental field of comparative example 1-2 group where wheat seeds were planted. After 130 days, the root lengths of the wheat planted in the experimental fields of comparative example 1-2 group were 149.6 cm and 142.5 cm, respectively, and the root dry weights were 164.3 g and 158.6 g, respectively. The composite soil conditioner prepared in comparative example 1-2 after storage was mixed with base fertilizer and ultrapure water respectively, and after complete dissolution, it was applied to the soil of the experimental field of comparative example 1-2 group where wheat seeds were planted. After 130 days, the root lengths of the wheat planted in the experimental fields of comparative example 1-2 group were 147.1 cm and 140.8 cm, respectively, and the root dry weights were 161.7 g and 156.3 g, respectively. The commercially available ordinary soil conditioner of the control group was mixed with base fertilizer and ultrapure water, and after complete dissolution, it was applied to the soil of the experimental field of the control group where wheat seeds were planted. After 130 days, the root length of the wheat planted in the control group experimental field was 127.7 cm, and the root dry weight was 143.3 g. The commercially available ordinary soil conditioner of the control group after storage was mixed with base fertilizer and ultrapure water, and after complete dissolution, it was applied to the soil of the control group experimental field where wheat seeds were planted. After 130 days, the root length of the wheat planted in the control group experimental field was 114.6 cm, and the root dry weight was 128.5 g. This shows that the soil loosening and root-promoting soil conditioner prepared by the present invention has significant root-promoting effect, long-term stability, and stable conditioning effect after storage.

[0060] Experimental Example 3: High efficiency determination test.

[0061] The test steps for determining the high efficiency of the soil loosening and root-promoting soil conditioner prepared in Examples 1-3 of the present invention are as follows: (1) A 6-mu test field was opened and wheat seeds were planted in all of them. The fields were divided into 3-mu embodiment group, 2-mu comparison group, and 1-mu control group. The application amount of the soil conditioner for loosening soil and promoting rooting prepared in Examples 1-3 was 6 kg / mu. The soil conditioner for loosening soil and promoting rooting prepared in Examples 1-3 was mixed with base fertilizer and ultrapure water in a weight ratio of 1:2:10, and after being completely dissolved, it was applied to the soil of the experimental fields of Groups 1-3 of Examples. The application amount of the composite soil conditioner prepared in Comparative Example 1-2 was 6 kg / mu. The composite soil conditioner prepared in Comparative Example 1-2 was mixed with base fertilizer and ultrapure water in a weight ratio of 1:2:10, and after being completely dissolved, it was applied to the soil of the experimental fields of Groups 1-2 of Comparative Example. The application amount of the commercially available ordinary soil conditioner (purchased from Nanning Yihua Trading Co., Ltd.) in the control group was 6 kg / mu. kg / mu, the control group commercially available common soil conditioner was mixed with base fertilizer and ultrapure water at a weight ratio of 1:2:10, and after complete dissolution, it was applied to the soil of the control group experimental field. Other field management measures of each group of experimental fields were the same; (2) After 30 days of application of the soil loosening and root-promoting soil conditioner prepared in Examples 1-3, the composite soil conditioner prepared in Comparative Examples 1-2, and the commercially available ordinary soil conditioner in the control group, five points of each experimental field were sampled, and the soil layer at a depth of 10 cm was collected. The soil bulk density was measured separately, and the average value was taken and the results were recorded; (3) After 130 days of application of the soil loosening and root-promoting soil conditioner prepared in Examples 1-3, the composite soil conditioner prepared in Comparative Examples 1-2, and the commercially available ordinary soil conditioner in the control group, the root length and root dry weight of the wheat planted in each experimental field were measured. Ten replicates were taken from each group, and the average value was taken to record the results.

[0062] Result analysis: Figure 4 This is the result diagram of soil bulk density in the experimental field after the reduced use described in Experimental Example 3 of the present invention. Figure 5 This is the result of wheat root growth in the experimental field after the reduced dosage described in Experimental Example 3 of the present invention. Figure 6 This is the result diagram of wheat root weight in the experimental field after the reduced use described in Experimental Example 3 of the present invention. As shown in the figure, the application amount of the loosening and root-promoting soil conditioner prepared in Example 1-3 is 6 kg / mu. The loosening and root-promoting soil conditioner prepared in Example 1-3 is mixed with base fertilizer and ultrapure water in a weight ratio of 1:2:10, and after complete dissolution, it is applied to the soil of the experimental field of Example 1-3 groups where wheat seeds are planted. After 30 days of application, the soil bulk density of the experimental field of Example 1-3 groups is 1.38 g / cm 3 , 1.34 g / cm 3 , 1.30 g / cm 3, 130 d after application, the root lengths of the wheat planted in the experimental fields of Examples 1-3 were 116.2 cm, 120.1 cm, and 123.3 cm, respectively, and the root dry weights were 127.1 g, 131.3 g, and 133.5 g, respectively. The application rate of the composite soil conditioner prepared in Comparative Examples 1-2 was 6 kg / mu. The composite soil conditioner prepared in Comparative Examples 1-2 was mixed with base fertilizer and ultrapure water in a weight ratio of 1:2:10. After complete dissolution, the mixture was applied to the soil of the experimental fields of Comparative Examples 1-2 where wheat seeds were planted. 30 d after application, the soil bulk density of the experimental fields of Comparative Examples 1-2 was 1.49 g / cm 3 、1.41 g / cm 3 After 130 days of application, the root lengths of wheat planted in the experimental fields of groups 1 and 2 of the control group were 110.5 cm and 103.7 cm, respectively, and the root dry weights were 121.2 g and 114.3 g, respectively. The application rate of the commercially available common soil conditioner in the control group was 6 kg / mu. The commercially available common soil conditioner in the control group was mixed with base fertilizer and ultrapure water in a weight ratio of 1:2:10. After complete dissolution, it was applied to the soil of the experimental field of the control group where wheat seeds were planted. After 30 days of application, the soil bulk density of the experimental field of the control group was 1.74 g / cm 3 After 130 days of application, the root length of wheat planted in the experimental fields of group 1-2 of the comparative example was 71.1 cm, and the root dry weight was 79.9 g, indicating that the soil loosening and root-promoting soil conditioner prepared by the present invention has significant root-promoting effect, high efficiency, small dosage and obvious effect, will not cause waste, and will not damage the soil structure.

[0063] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

[0064] The present invention and its embodiments are described above. Such description is not restrictive. The drawings show only one embodiment of the present invention, and actual applications are not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, any method and embodiment similar to the technical solution without creative design shall fall within the scope of protection of the present invention.

Claims

1. A soil conditioner for loosening soil and promoting root growth, characterized in that: The soil loosening and root-promoting soil conditioner comprises the following components in parts by weight: 32-35 parts of soil-loosening and fermentation substrate, 14-18 parts of compound root promoter, 3.5-4.5 parts of fruit shell biochar powder, 2.2-2.4 parts of ferrous sulfate, 2.3-2.6 parts of magnesium sulfate, and 2.8-3.1 parts of dolomite powder; The raw materials for preparing the soil-loosening and improved fermentation matrix include the following components in parts by weight: 3-4 parts of diatomaceous earth, 3.5-4.5 parts of opal, 2.8-3.6 parts of feather meal, 5.2-5.8 parts of oyster shells, 4.2-4.9 parts of animal feces, 2.2-2.4 parts of peat moss, 1.5-1.8 parts of sedge, 2.1-2.3 parts of silk, 1.1-1.3 parts of fermentation agent, 1.2-1.6 parts of vinyltriethoxysilane, 1.3-1.4 parts of polyacrylic acid, 0.6-0.9 parts of coumarin, and 0.2-0.3 parts of citric acid; The raw materials for preparing the composite root-promoting agent include the following components in parts by weight: 2.5-3.5 parts of broad beans, 2.2-2.4 parts of Chinese milk vetch, 1.8-2.4 parts of wheat straw, 1.3-1.6 parts of rapeseed, 1.2-1.4 parts of seaweed, 0.8-1.3 parts of sargassum, 1.5-1.7 parts of willow leaves, 0.5-0.8 parts of L-arginine, 0.4-0.7 parts of fulvic acid, 0.3-0.5 parts of phytoalexin, 0.4-0.6 parts of cinnamic acid, 0.4-0.6 parts of L-tryptophan, 0.5-0.8 parts of tea polyphenols, 0.6-0.8 parts of L-proline, 2.3-2.7 parts of polyaspartic acid, 2.4-2.8 parts of acetyl glucosamine, and 0.2-0.3 parts of N-hydroxysuccinimide.

2. The soil loosening and root-promoting soil conditioner according to claim 1, characterized in that The method for preparing the soil-loosening and fermentation-improving substrate specifically comprises the following steps: S1. Grind diatomaceous earth, opal, feather powder, and oyster shell to obtain a porous powder; S2, crushing animal feces, peat moss, sedge, and silk to obtain nutritious organic matter; S3, mixing and fermenting the porous powder prepared in S1 with the nutrient organic matter, fermentation agent, and ultrapure water prepared in S2 to obtain a loose soil matrix; S4, reacting vinyltriethoxysilane, polyacrylic acid, coumarin, citric acid, and anhydrous ethanol to form a polymer solution; S5, fully mixing the polymer solution prepared in S4 with the loose soil matrix prepared in S3, adsorbing the mixture, and freeze-drying the mixture to obtain a loose soil improved fermentation matrix; In S2, the animal manure consists of earthworm manure, sheep manure, and chicken manure, and the weight ratio is 2.2:1.8:1; In S3, the fermentation bacteria agent consists of Candida flocculenta, Actinomyces cyanobacteria, and Pseudomonas paraflavonoids, and the mixing ratio by weight is 0.9:1.1:

1.

3. The soil loosening and root-promoting soil conditioner according to claim 2, characterized in that The preparation method of the composite root promoting agent specifically comprises the following steps: L1. Mix and grind broad beans, astragalus, wheat straw, rapeseed, seaweed, sargassum, willow leaves, and L-arginine to obtain root-promoting nutrient powder; L2. Mixing fulvic acid, phytoalexin, cinnamic acid, L-tryptophan, tea polyphenols, and L-proline to obtain an auxiliary root-promoting component; L3, reacting polyaspartic acid, acetyl glucosamine, N-hydroxysuccinimide, and ultrapure water to form a complex solution; L4, the complex solution prepared by L3, the root-promoting nutrient powder prepared by L1, and the auxiliary root-promoting component prepared by L2 are mixed, and then freeze-nano spray-dried to obtain a composite root-promoting agent.

4. A method for preparing the soil loosening and root-promoting soil conditioner according to any one of claims 1 to 3, characterized in that: The specific steps include: Step 1: Mixing fruit shell biochar powder, ferrous sulfate, magnesium sulfate, and dolomite powder to obtain a protective stabilizer; Step 2: adding the loosened soil-improved fermentation substrate into the protective stabilizer prepared in step 1, and mixing to obtain a conditioning component; Step 3: Add the compound root-promoting agent into the conditioning component prepared in step 2, mix well, and sterilize with ultraviolet light to obtain a soil conditioner for loosening and promoting root growth.

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