CN112442375B - Root rot resistant water-retaining multifunctional soil conditioner and preparation method thereof - Google Patents

Root rot resistant water-retaining multifunctional soil conditioner and preparation method thereof Download PDF

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CN112442375B
CN112442375B CN202011390134.0A CN202011390134A CN112442375B CN 112442375 B CN112442375 B CN 112442375B CN 202011390134 A CN202011390134 A CN 202011390134A CN 112442375 B CN112442375 B CN 112442375B
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water
layer
root rot
particles
straw
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CN112442375A (en
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刘苹
赵海军
刘开昌
李宗新
林海涛
沈玉文
宋效宗
王江涛
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Institute of Agricultural Resources and Environment of Shandong Academy of Agricultural Sciences
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Institute of Agricultural Resources and Environment of Shandong Academy of Agricultural Sciences
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K17/00—Soil-conditioning materials or soil-stabilising materials
    • C09K17/14—Soil-conditioning materials or soil-stabilising materials containing organic compounds only
    • C09K17/18—Prepolymers; Macromolecular compounds
    • C09K17/32—Prepolymers; Macromolecular compounds of natural origin, e.g. cellulosic materials
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N31/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
    • A01N31/08—Oxygen or sulfur directly attached to an aromatic ring system
    • A01N31/16—Oxygen or sulfur directly attached to an aromatic ring system with two or more oxygen or sulfur atoms directly attached to the same aromatic ring system
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F11/00—Other organic fertilisers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F3/00—Fertilisers from human or animal excrements, e.g. manure
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/60—Biocides or preservatives, e.g. disinfectants, pesticides or herbicides; Pest repellants or attractants
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/80—Soil conditioners
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/30—Layered or coated, e.g. dust-preventing coatings
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/30—Layered or coated, e.g. dust-preventing coatings
    • C05G5/37—Layered or coated, e.g. dust-preventing coatings layered or coated with a polymer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2101/00—Agricultural use

Abstract

A multifunctional soil conditioner for preventing root rot and retaining water and its preparation method are provided, which can be used for preventing and treating root rot, slowing soil hardening and retaining water of soil. The modifier comprises a root rot resistant layer, a loosening layer and a water retention layer which are sequentially arranged from inside to outside. The preparation method of the modifying agent comprises (1) preparation of a root rot resistant layer; (2) preparing a loose layer, namely wrapping the root rot resistant layer in the loose layer; (3) and (3) preparing a water retention layer, namely wrapping the loose layer and the root rot resistant layer in the water retention layer. The multifunctional soil conditioner disclosed by the invention can be used for improving soil, avoiding soil hardening, promoting water retention of the soil, reducing bacteria in the soil and enhancing the root rot resistance of crops.

Description

Root rot resistant water-retaining multifunctional soil conditioner and preparation method thereof
Technical Field
The invention relates to the technical field of soil improvement, in particular to a root rot resistant water-retention multifunctional soil conditioner and a preparation method thereof.
Background
The wheat root rot is a disease caused by single or compound infection of various soil-borne pathogenic bacteria, wheat can occur in each growth period, and the occurrence of harm is common in recent years. Seedling withering is formed in the seedling stage, and stem withering, leaf withering and spike withering are formed in the adult stage. Because of the different symptoms of the affected period and parts of wheat, the wheat has the names of spot disease, black embryo disease, blue death disease and the like. Symptoms often appear differently depending on climatic conditions. In arid or semiarid regions, root rot type symptoms are produced more. In humid areas, leaf spots, stem withering and neck withering may occur in addition to root rot. In addition, in the areas with deficient water resources, the irrigation quantity of the wheat is insufficient, and the yield of the wheat can be greatly influenced. The irrigation is insufficient, soil hardening is easily caused, and the growth extension of wheat root systems is influenced.
Disclosure of Invention
The invention aims to provide a root rot resistant water-retaining multifunctional soil conditioner and a preparation method thereof, which are used for preventing and treating root rot, slowing soil hardening and retaining water of soil.
The technical scheme adopted by the invention for solving the technical problems is as follows: the multifunctional soil conditioner is characterized by comprising a root rot resistant layer, a loosening layer and a water retention layer which are sequentially arranged from inside to outside.
Further, the effective components of the root rot resistant layer are cis-asarin and resveratrol, and the auxiliary components are nitrogen, phosphorus and potassium fertilizer, biological fertilizer or straw.
Further, the weight part of the effective component is 0.5-1 part, and the weight part of the auxiliary component is 9-9.5 parts.
Furthermore, the cis-asarone accounts for 70-90% of the active ingredients, and the resveratrol accounts for 10-30%.
A preparation method of a root rot resistant water-retention multifunctional soil conditioner is characterized by comprising the following steps:
1. preparation of a layer resistant to root rot
(1) Mixing nitrogen-phosphorus-potassium fertilizer or biological fertilizer or straw with cis-asarone and resveratrol to prepare granular root rot resistant layer granules;
(2) drying the obtained root rot resistant layer particles in the step (1);
2. preparation of the Loose layer
(1) Crushing the straws, wherein the crushing degree is based on that the straws can pass through a 5-10-mesh sieve; then piling up the straw fragments, pouring a diluent of a decomposing agent, covering a layer of thin soil on the surface layer, and decomposing the straw by using the decomposing agent;
(2) adding powdery biological fertilizer into the decomposed straw, and adding water to obtain straw pulp;
(3) adding the straw pulp into a drum-type granulator, so that the straw pulp rotates along with a drum of the drum-type granulator and is stained on the whole inner wall of the drum;
(4) adding the dried root rot resistant particles into the roller in the step (3), wherein the straw pulp is adhered to the root rot resistant particles in the process of rotating along with the roller;
(5) preliminarily drying the root rot resistant particles adhered with the straw pulp at an outlet of the roller to obtain wet loose layer particles;
(6) collecting loose layer particles, and then fully drying;
3. preparation of Water-retaining layer
(1) Uniformly mixing 18-27% of starch, 42-51% of acrylate and 30% of water to obtain fluid water-retaining slurry;
(2) adding the water-retaining slurry into a drum-type granulator to enable the water-retaining slurry to rotate along with a drum of the drum-type granulator and to be stained with the whole inner wall of the drum;
(3) adding loose layer particles into the roller in the step (2), adhering water retention slurry to the loose layer particles in the rotating process of the roller, and adding a cross-linking agent into the tail end of the roller;
(4) primarily drying the loose layer particles adhered with the water retention layer pulp at the outlet of the roller to obtain wet water retention layer particles;
(5) and collecting the water-retaining layer particles, and then fully drying to obtain the modifying agent.
Further, when the nitrogen-phosphorus-potassium fertilizer is selected to prepare the root rot resistant layer, cis-asarone and resveratrol are added in the preparation process of the nitrogen-phosphorus-potassium fertilizer to obtain the root rot resistant layer particles.
Further, when a biological fertilizer is selected to manufacture a root rot resistant layer, the biological fertilizer is sufficiently mixed with cis-asarone and resveratrol, and then processed into granules.
Further, when the selected straws are used for manufacturing the root rot resistant layer, the straws are crushed and sieved by a 30-mesh sieve, filtered straw powder is collected, water is added to prepare slurry, cis-asarone and resveratrol are added to be uniformly stirred, the mixture is heated to 60-85 ℃ and gelatinized for 30-50 min, and after the mixture is cooled to the normal temperature, the gelatinized and hardened straw powder is crushed by a crushing machine to obtain the root rot resistant particles.
The invention has the beneficial effects that: the invention provides a root rot resistant water-retaining multifunctional soil conditioner and a preparation method thereof, which at least have the following advantages:
1. the water-retaining agent is insoluble in water, but can absorb water which is hundreds times of the self weight, the water-retaining agent can effectively inhibit water evaporation, after the water-retaining agent is infiltrated into the soil, the water evaporation is inhibited to a great extent, the saturated water content of the soil is improved, and the saturated water conductivity of the soil is reduced, so that the water release speed of the soil is slowed down, the penetration and the loss of the soil water are reduced, the purpose of water retention is achieved, the growth and the development of crop root systems can be stimulated, the length of the roots is increased, the number of the roots is increased, and the good growth vigor is kept under the drought condition.
2. The fertilizer is preserved, because the water-retaining agent has the functions of absorbing and retaining water, the fertilizer in the water-retaining agent can be fixed in the water-retaining agent, the leaching loss of soluble nutrients is reduced to a certain extent, and the effects of saving water and fertilizer and improving the utilization rate of the water and fertilizer are achieved.
3. The heat preservation is carried out, the water-retaining agent has good heat preservation performance, and after the water-retaining agent is applied, the absorbed water can be used for keeping partial heat energy generated by illumination in the daytime to adjust the temperature at night, so that the day and night temperature difference of soil is reduced.
4. The soil structure is improved, and the water-retaining agent is applied to the soil, so that the surrounding soil is changed from compact to loose and the pores are enlarged along with the regular change of water absorption expansion and water loss contraction, thereby improving the permeability of the soil to a certain extent.
5. The root rot resistant layer, the loosening layer and the water retention layer are sequentially arranged from inside to outside, and after the root rot resistant layer, the water retention agent firstly plays a role in locking water; along with the fracture of the water retention layer, the loose layer absorbs water and then the volume is increased, so that the soil around the particles of the modifying agent is propped open, and the gaps are increased; finally, after the anti-root rot component leaks out and absorbs water, on one hand, the nitrogen, phosphorus and potassium fertilizer is necessary for crops (such as wheat), and on the other hand, the anti-root rot component can also play a role in resisting root rot.
Drawings
FIG. 1 is a schematic structural view of the modifying agent of the present invention;
in the figure: 1 root rot resistant layer, 2 loose layer, 3 water retention layer.
Detailed Description
As shown in fig. 1, the root rot resistant water-retaining multifunctional soil conditioner is granular, the diameter is 8-15mm, the conditioner is of an inner-outer layer structure and sequentially comprises a root rot resistant layer 1, a loosening layer 2 and a water retaining layer 3 from inside to outside, wherein the effective components of the root rot resistant layer are cis-asahi asarum and resveratrol, and the root rot resistant layer further comprises auxiliary components which are nitrogen, phosphorus and potassium fertilizers, biological fertilizers or straws; the active ingredients comprise 70-90% of cis-asarone and 10-30% of resveratrol. The loose layer comprises straw fragments and a biological fertilizer, wherein the ratio of the straw fragments to the biological fertilizer is 5: 5-7: 3. the water-retaining layer comprises 18-27% of starch, 42-51% of acrylate, 30% of water and 0.5-1.0% of cross-linking agent.
In the whole root rot resistant layer, the weight ratio of the auxiliary components is 9-9.5 parts, and the weight ratio of the effective components is 0.5-1 part.
The auxiliary components can be nitrogen, phosphorus and potassium fertilizers, biological fertilizers or straws, the cis-asarone and the resveratrol can be mixed with common nitrogen, phosphorus and potassium fertilizers for production, the common nitrogen, phosphorus and potassium fertilizers on the market are generally granular, the cis-asarone and the resveratrol are added when the nitrogen, phosphorus and potassium fertilizers are produced, and the uniform stirring is ensured. Therefore, the application of nitrogen, phosphorus and potassium can be realized, and the root rot resistant component can be added, so that the root rot of wheat can be prevented and treated. The root rot resistant layer can prevent and control root rot and provide necessary nitrogen, phosphorus and potassium for plants.
The auxiliary component can also be biological fertilizer, such as biological fertilizer obtained by fermenting livestock feces, mixing the biological fertilizer with cis-asarone and resveratrol thoroughly, and processing into granule. And when the auxiliary component is straw, crushing the straw, sieving the crushed straw with a 30-mesh sieve, collecting filtered straw powder, adding water to prepare slurry, adding cis-asarone and resveratrol, uniformly stirring, heating to 60-85 ℃, gelatinizing for 30-50 min, and crushing the gelatinized and hardened straw powder by adopting a crushing machine after cooling to normal temperature to obtain particles.
The main component of the loose layer is straws, and the straws are crushed to the extent that the straws can pass through a 5-10-mesh sieve. And then piling up the straw fragments, pouring a diluent of a decomposing agent, covering a layer of thin soil on the surface layer, and decomposing the straw by using the decomposing agent. Adding powdered biological fertilizer into the decomposed straw, and adding water to obtain straw pulp, so that the mixture of straw, biological fertilizer and water (straw pulp) can flow to form slurry. Then the straw pulp is poured into the roller of the roller type granulator, and the straw pulp flows and rolls on the inner wall of the roller along with the continuous rotation of the roller. At the moment, dry root rot resistant particles are put into the roller, and the inner wall of the roller is full of straw pulp, so that the root rot resistant particles can be adhered to the straw pulp when rolling in the roller. The roller is arranged obliquely, one side of the root rot resistant particles rolls along the circumferential direction, the other side rolls from top to bottom along the axial direction of the roller, and finally the particles fall down through the roller. And drying the root rot resistant particles adhered with the straw pulp to obtain loose layer particles for later use.
The main components of the water retention layer are 18-27% of starch, 42-51% of acrylate, 30% of water and 0.5-1.0% of cross-linking agent. During processing, firstly, uniformly mixing 18-27% of starch, 42-51% of acrylate and 30% of water to obtain fluid water-retaining slurry, then adhering the water-retaining slurry to the surfaces of loose layer particles obtained by drying, adding a cross-linking agent to the adhered tail section to promote the solidification of the water-retaining slurry on the surfaces of the loose layer particles to obtain a wet modifying agent, and then drying and drying the wet modifying agent to obtain the granular stable modifying agent.
The preparation of the improver of the present invention is described below:
1. preparation of a layer resistant to root rot
(1) Mixing nitrogen-phosphorus-potassium fertilizer or biological fertilizer or straw with cis-asarone and resveratrol to prepare granular root rot resistant layer granules;
(2) drying the obtained root rot resistant layer particles in the step (1);
2. preparation of the Loose layer
(1) Crushing the straws, wherein the crushing degree is based on that the straws can pass through a sieve of 5-10 meshes; then piling up the straw fragments, pouring a diluent of a decomposing agent, covering a layer of thin soil on the surface layer, and decomposing the straw by using the decomposing agent;
(2) adding powdery biological fertilizer into the decomposed straw, and adding water to obtain straw pulp;
(3) adding the straw pulp into a drum-type granulator, so that the straw pulp rotates along with a drum of the drum-type granulator and is stained on the whole inner wall of the drum;
(4) adding the dried root rot resistant particles into the roller in the step (3), wherein the straw pulp is adhered to the root rot resistant particles in the process of rotating along with the roller;
(5) preliminarily drying the root rot resistant particles adhered with the straw pulp at an outlet of the roller to obtain wet loose layer particles;
(6) collecting loose layer particles, and then fully drying;
3. preparation of Water-retaining layer
(1) Uniformly mixing 18-27% of starch, 42-51% of acrylate and 30% of water to obtain fluid water-retaining slurry;
(2) adding the water-retaining slurry into a drum-type granulator to enable the water-retaining slurry to rotate along with a drum of the drum-type granulator and to be stained with the whole inner wall of the drum;
(3) adding loose layer particles into the roller in the step (2), adhering water retention slurry to the loose layer particles in the rotating process of the roller, and adding a cross-linking agent into the tail end of the roller;
(4) primarily drying the loose layer particles adhered with the water retention layer pulp at the outlet of the roller to obtain wet water retention layer particles;
(5) and collecting the water-retaining layer particles, and then fully drying to obtain the modifying agent.
When the nitrogen-phosphorus-potassium fertilizer is selected to manufacture the root rot resistant layer, cis-asarone and resveratrol are added in the manufacturing process of the nitrogen-phosphorus-potassium fertilizer to obtain the root rot resistant layer particles.
In the whole root rot resistant layer, the proportion of the auxiliary components is 9 to 9.5 parts, and the proportion of the effective components is 0.5 to 1 part.
In the active ingredients, the cis-asarone accounts for 70-90 percent, and the resveratrol accounts for 10-30 percent.
When the biological fertilizer is selected to manufacture the root rot resistant layer, the biological fertilizer is fully mixed with the cis-asarone and the resveratrol, and then the mixture is processed into granules.
When the selected straws are used for manufacturing the root rot resistant layer, the straws are crushed and sieved by a 30-mesh sieve, filtered straw powder is collected, water is added to prepare slurry, cis-asarone and resveratrol are added to be uniformly stirred, the mixture is heated to 60-85 ℃ and gelatinized for 30-50 min, and after the mixture is cooled to the normal temperature, a crushing machine is used for crushing the gelatinized and hardened straw powder, so that the root rot resistant particles are obtained.
The invention has the beneficial effects that: 1. the water-retaining agent is insoluble in water, but can absorb water which is hundreds times of the self weight, the water-retaining agent can effectively inhibit water evaporation, after the water-retaining agent is infiltrated into the soil, the water evaporation is inhibited to a great extent, the saturated water content of the soil is improved, and the saturated water conductivity of the soil is reduced, so that the water release speed of the soil is slowed down, the penetration and the loss of the soil water are reduced, the purpose of water retention is achieved, the growth and the development of crop root systems can be stimulated, the length of the roots is increased, the number of the roots is increased, and the good growth vigor is kept under the drought condition.
2. The fertilizer is preserved, because the water-retaining agent has the functions of absorbing and retaining water, the fertilizer in the water-retaining agent can be fixed in the water-retaining agent, the leaching loss of soluble nutrients is reduced to a certain extent, and the effects of saving water and fertilizer and improving the utilization rate of the water and fertilizer are achieved.
3. The heat preservation is carried out, the water-retaining agent has good heat preservation performance, and after the water-retaining agent is applied, the absorbed water can be used for keeping partial heat energy generated by illumination in the daytime to adjust the temperature at night, so that the day and night temperature difference of soil is reduced.
4. The soil structure is improved, and the water-retaining agent is applied to the soil, so that the surrounding soil is changed from compact to loose and the pores are enlarged along with the regular change of water absorption expansion and water loss contraction, thereby improving the permeability of the soil to a certain extent.
5. The root rot resistant layer, the loosening layer and the water retention layer are sequentially arranged from inside to outside, and after the root rot resistant layer, the water retention agent firstly plays a role in locking water; along with the fracture of the water retention layer, the loose layer absorbs water and then the volume is increased, so that the soil around the particles of the modifying agent is propped open, and the gaps are increased; finally, after the anti-root rot component leaks out and absorbs water, on one hand, the nitrogen, phosphorus and potassium fertilizer is necessary for crops (such as wheat), and on the other hand, the anti-root rot component can also play a role in resisting root rot.

Claims (7)

1. The multifunctional soil conditioner is characterized by comprising a root rot resistant layer, a loosening layer and a water retention layer which are sequentially arranged from inside to outside, wherein the effective components of the root rot resistant layer are cis-asarone and resveratrol, and the auxiliary components are nitrogen-phosphorus-potassium fertilizer, biological fertilizer or straw; the preparation method of the root rot resistant water-retention multifunctional soil conditioner comprises the following steps:
preparation of root rot resistant layer
(1) Mixing nitrogen-phosphorus-potassium fertilizer or biological fertilizer or straw with cis-asarone and resveratrol to prepare granular root rot resistant layer granules;
(2) drying the obtained root rot resistant layer particles in the step (1);
preparation of second, loose layer
(1) Crushing the straws, wherein the crushing degree is based on that the straws can pass through a 5-10-mesh sieve; then piling up the straw fragments, pouring a diluent of a decomposing agent, covering a layer of thin soil on the surface layer, and decomposing the straw by using the decomposing agent;
(2) adding powdery biological fertilizer into the decomposed straw, and adding water to obtain straw pulp;
(3) adding the straw pulp into a drum-type granulator, so that the straw pulp rotates along with a drum of the drum-type granulator and is stained on the whole inner wall of the drum;
(4) adding the dried root rot resistant particles into the roller in the step (3), wherein the straw pulp is adhered to the root rot resistant particles in the process of rotating along with the roller;
(5) preliminarily drying the root rot resistant particles adhered with the straw pulp at an outlet of the roller to obtain wet loose layer particles;
(6) collecting loose layer particles, and then fully drying;
preparation of Water-retaining layer
(1) Uniformly mixing 18-27% of starch, 42-51% of acrylate and 30% of water to obtain fluid water-retaining slurry;
(2) adding the water-retaining slurry into a drum-type granulator to enable the water-retaining slurry to rotate along with a drum of the drum-type granulator and to be stained with the whole inner wall of the drum;
(3) adding loose layer particles into the roller in the step (2), adhering water retention slurry to the loose layer particles in the rotating process of the roller, and adding a cross-linking agent into the tail end of the roller;
(4) primarily drying the loose layer particles adhered with the water retention layer pulp at the outlet of the roller to obtain wet water retention layer particles;
(5) and collecting the water-retaining layer particles, and then fully drying to obtain the modifying agent.
2. The multifunctional soil conditioner for resisting root rot and retaining water as claimed in claim 1, wherein the effective component is 0.5 to 1 part by weight, and the auxiliary component is 9 to 9.5 parts by weight.
3. The multifunctional soil conditioner for resisting root rot and retaining water as claimed in claim 2, wherein the cis-asarone in the active ingredients accounts for 70-90%, and the resveratrol accounts for 10-30%.
4. A preparation method of a root rot resistant water-retention multifunctional soil conditioner is characterized by comprising the following steps:
preparation of root rot resistant layer
(1) Mixing nitrogen-phosphorus-potassium fertilizer or biological fertilizer or straw with cis-asarone and resveratrol to prepare granular root rot resistant layer granules;
(2) drying the obtained root rot resistant layer particles in the step (1);
preparation of second, loose layer
(1) Crushing the straws, wherein the crushing degree is based on that the straws can pass through a 5-10-mesh sieve; then piling up the straw fragments, pouring a diluent of a decomposing agent, covering a layer of thin soil on the surface layer, and decomposing the straw by using the decomposing agent;
(2) adding powdery biological fertilizer into the decomposed straw, and adding water to obtain straw pulp;
(3) adding the straw pulp into a drum-type granulator, so that the straw pulp rotates along with a drum of the drum-type granulator and is stained on the whole inner wall of the drum;
(4) adding the dried root rot resistant particles into the roller in the step (3), wherein the straw pulp is adhered to the root rot resistant particles in the process of rotating along with the roller;
(5) preliminarily drying the root rot resistant particles adhered with the straw pulp at an outlet of the roller to obtain wet loose layer particles;
(6) collecting loose layer particles, and then fully drying;
preparation of Water-retaining layer
(1) Uniformly mixing 18-27% of starch, 42-51% of acrylate and 30% of water to obtain fluid water-retaining slurry;
(2) adding the water-retaining slurry into a drum-type granulator to enable the water-retaining slurry to rotate along with a drum of the drum-type granulator and to be stained with the whole inner wall of the drum;
(3) adding loose layer particles into the roller in the step (2), adhering water retention slurry to the loose layer particles in the rotating process of the roller, and adding a cross-linking agent into the tail end of the roller;
(4) primarily drying the loose layer particles adhered with the water retention layer pulp at the outlet of the roller to obtain wet water retention layer particles;
(5) and collecting the water-retaining layer particles, and then fully drying to obtain the modifying agent.
5. The method for preparing the multifunctional soil conditioner for root rot resistance and water retention according to claim 4, wherein when a nitrogen phosphorus potassium fertilizer is selected to produce the root rot resistance layer, cis-asarone and resveratrol are added during the production of the nitrogen phosphorus potassium fertilizer to obtain particles of the root rot resistance layer.
6. The method for preparing the multifunctional soil conditioner for resisting root rot and retaining water as claimed in claim 4, wherein when the biological fertilizer is selected to produce the layer resisting root rot, the biological fertilizer is fully mixed with cis-asarone and resveratrol, and then processed into granules.
7. The preparation method of the multifunctional soil conditioner for resisting root rot and preserving water as claimed in claim 4, characterized in that when selecting straws for making a layer resisting root rot, the straws are crushed and sieved by a 30-mesh sieve, filtered straw powder is collected and added with water to make slurry, then cis-asarone and resveratrol are added to be uniformly stirred, the mixture is heated to 60-85 ℃ and gelatinized for 30-50 min, and after cooling to normal temperature, the gelatinized and hardened straw powder is crushed by a crushing machine to obtain particles resisting root rot.
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CN104672009A (en) * 2015-02-05 2015-06-03 永清县久恒农业产品有限公司 Multifunctional active organic fertilizer and preparation method thereof
CN105541467A (en) * 2015-12-20 2016-05-04 青岛嘉禾丰肥业有限公司 Method and equipment for producing a slow-release fertilizer with multilayer structure
CN106035323A (en) * 2016-05-25 2016-10-26 广西南宁农事帮农业科技服务有限公司 Sustained-release pesticide granules and preparation method therefor
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JPS63269934A (en) * 1987-04-27 1988-11-08 Shiyouhou Sangyo Kk Water-retaining agent for prevention of root rot
CN102584477A (en) * 2012-03-27 2012-07-18 贾洪涛 Slowly-releasing water conservation biological organic and inorganic compound fertilizer particles and production method thereof
CN104604861A (en) * 2015-01-08 2015-05-13 馥稷生物科技发展（上海）有限公司 Plant-source synergistic compound bactericide containing resveratrol and preparation method thereof
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