Soil conditioner capable of inhibiting diseases and insect pests for long time as well as preparation method and application of soil conditioner

Abstract

The invention is applied to the technical field of soil amendments, and discloses a soil amendment for long-acting inhibition of plant diseases and insect pests, and the soil amendment comprises the following components in parts by mass: 1-2 parts of a slow-release composite bacteriostatic agent, 0.3-0.5 part of a protective agent and 10-15 parts of a bearing substrate, a bacteriostatic material in the slow-release composite bacteriostatic agent is one of imidazolidinyl urea and bis (hydroxymethyl) imidazolidinyl urea. According to the soil conditioner capable of inhibiting diseases and insect pests for a long time, a mode of mixing the bacteriostatic agent with the ion exchange resin is adopted, so that the bacteriostatic agent can be slowly released after being fully mixed with soil, and the soil can obtain continuous bacteriostatic and insect pest-resistant effects after being improved; meanwhile, the soil conditioner can prevent common mites and fungal diseases through the protective agent composed of the christomycin and the deionized water, and the soil conditioner can be mixed with soil and cannot be consumed too fast in the mode that the slow-release composite bacteriostatic agent and the protective agent are loaded and put through the bearing matrix.

Description

Technical Field

[0001] The present invention relates to the technical field of soil conditioners, and in particular to a soil conditioner for inhibiting pests and diseases in a long-term manner, a preparation method and an application thereof. Background Art

[0002] In agricultural production, soil quality is crucial to the growth and yield of crops. However, the current soil faces many problems. On the one hand, the long-term abuse of chemical fertilizers and pesticides has destroyed the beneficial microbial communities in the soil and broken the ecological balance of the soil, which not only leads to soil compaction and reduced fertility, but also makes crops more vulnerable to pests and diseases. On the other hand, with the change of global climate and the deterioration of the environment, the frequency and degree of damage of pests and diseases are increasing. Traditional pest and disease control methods mainly rely on chemical pesticides. Although they can have a certain control effect in the short term, long-term use will lead to drug resistance of pests and diseases, and will also cause serious pollution to the soil, water sources and environment, endangering human health. In addition, the existing soil conditioners are not ideal in terms of pest and disease resistance. They can often only improve the physical and chemical properties of the soil, but have limited control effects on pests and diseases. Although some biological control methods are relatively environmentally friendly, they have problems such as poor stability and unsustainable effects. Therefore, it is an urgent need in the current agricultural field to develop a soil conditioner that can effectively improve soil structure and soil fertility and significantly improve the ability to resist pests and diseases. Summary of the invention

[0003] The purpose of the present invention is to provide a soil conditioner for long-term inhibition of pests and diseases, a preparation method and application thereof, so as to solve the problem of poor long-term pest control effect raised in the above background technology.

[0004] To achieve the above purpose, the present invention provides the following technical solution: a soil conditioner for long-term inhibition of pests and diseases, the soil conditioner, calculated by weight, is composed of 1-2 parts of a slow-release composite antibacterial agent, 0.3-0.5 parts of a protective agent and 10-15 parts of a supporting matrix.

[0005] Preferably, the antibacterial material in the sustained-release composite antibacterial agent is one of imidazolidinyl urea and bis(hydroxymethyl)imidazolidinyl urea, the protective agent is composed of huaguangmycin and deionized water, and the concentration of huaguangmycin is 20-60 mg / L.

[0006] Preferably, the carrier matrix is ​​an aqueous gel matrix, and the carrier matrix is ​​composed of 80-100 parts of water, 7-9 parts of glycerol, 5-7 parts of cellulose derivatives, 0.8-1.2 parts of carbomer, 0.04-0.06 parts of alginate and 2-4 parts of starch.

[0007] A method for preparing a soil conditioner for long-term inhibition of plant diseases and insect pests, the method comprising the following steps:

[0008] S1. preparing a sustained-release composite antibacterial agent;

[0009] S2, preparing a supporting matrix;

[0010] S3, mixing the sustained-release composite antibacterial agent and the supporting matrix according to a predetermined ratio and sealing them for later use;

[0011] S4. Before applying the soil conditioner, mix Huaguangmycin and deionized water in proportion to prepare a protective agent.

[0012] Preferably, in step S1, the preparation of the sustained-release composite antibacterial agent comprises the following steps:

[0013] Step 1, pretreating the ion exchange resin;

[0014] Step 2, mixing the resin and the antibacterial agent solution and controlling the temperature, pH value and mixing time to ensure that the antibacterial agent can be fully adsorbed onto the resin;

[0015] Step 3: After the mixing is completed, the adsorption efficiency of the mixture on the antibacterial agent and the stability of the mixture are tested;

[0016] Step 4: The mixed resin should be properly stored and handled to maintain antibacterial properties and stability.

[0017] Preferably, in step S2, the preparation of the supporting matrix comprises the following steps:

[0018] Step 1, dissolve alginate and starch in an appropriate amount of water, add carbomer while stirring and continue stirring until swelling is uniform;

[0019] Step 2, adding glycerol and cellulose derivatives into a container and adding the remaining amount of water, and stirring to obtain a mixed solution;

[0020] Step 3: Add the mixed solution into the carbomer swollen material and stir evenly to obtain a colorless and transparent supporting matrix.

[0021] Preferably, the mass ratio of the antibacterial agent solution to the resin in step 2 is preferably (0.8-1.7): (98.3-99.2).

[0022] Preferably, the temperature of stirring the antibacterial agent solution and the resin in step 2 is controlled to be 30-45°C.

[0023] Preferably, the pH value of the antibacterial agent solution and the resin stirred in step 2 is in the range of 2-4, and the mixing time in step 2 is 30-45 minutes.

[0024] Compared with the prior art, the invention has the following beneficial effects: the soil conditioner for long-term inhibition of pests and diseases:

[0025] The antibacterial agent is mixed with the ion exchange resin so that the antibacterial agent can be slowly released after being fully mixed with the soil, so that after being improved by the antibacterial agent and the cellulose derivatives, carbomer and alginate in the carrier matrix, the physical, chemical and biological properties of the soil can be improved, the water retention capacity of the soil can be improved, the growth of beneficial microorganisms in the rhizosphere can be promoted, the soil aggregate structure can be improved, the soil fertility can be enhanced, and a sustained antibacterial and anti-pest effect can be obtained. At the same time, the protective agent composed of huaguangmycin and deionized water allows the soil conditioner to prevent common mites and fungal diseases. Further, the slow-release composite antibacterial agent and the protective agent are carried and released by the carrier matrix, so that the soil conditioner can be better mixed with the soil without being consumed too quickly, thereby ensuring a long-term prevention and control effect. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The present invention provides a technical solution: a soil conditioner for long-term inhibition of pests and diseases, wherein the soil conditioner is composed of 1-2 parts of a slow-release composite antibacterial agent, 0.3-0.5 parts of a protective agent, and 10-15 parts of a supporting matrix by weight;

[0028] The antibacterial material in the sustained-release composite antibacterial agent is one of imidazolidinyl urea and bis(hydroxymethyl)imidazolidinyl urea, the protective agent is composed of huaguangmycin and deionized water, and the concentration of huaguangmycin is 20-60 mg / L;

[0029] The carrier matrix is ​​an aqueous gel matrix, and the carrier matrix is ​​composed of 80-100 parts of water, 7-9 parts of glycerol, 5-7 parts of cellulose derivatives, 0.8-1.2 parts of carbomer, 0.04-0.06 parts of alginate and 2-4 parts of starch;

[0030] A method for preparing a soil conditioner for long-term inhibition of plant diseases and insect pests, the method comprising the following steps:

[0031] S1. preparing a sustained-release composite antibacterial agent;

[0032] S2, preparing a supporting matrix;

[0033] S3, mixing the sustained-release composite antibacterial agent and the supporting matrix according to a predetermined ratio and sealing them for later use;

[0034] S4. Before applying the soil conditioner, mix Huaguangmycin and deionized water in proportion to prepare a protective agent.

[0035] Embodiment 1:

[0036] The ion exchange resin was pretreated, and the resin was mixed with the imidazolidinyl urea solution and stirred at 30°C and pH 2 for 30 minutes to ensure that the antibacterial agent could be fully adsorbed onto the resin. After the mixing was completed, the adsorption efficiency of the mixture on the antibacterial agent and the stability of the mixture were tested. The mixed resin should be properly stored and handled to maintain the antibacterial performance and stability;

[0037] Then, 0.05 parts of alginate and 3 parts of starch are dissolved in an appropriate amount of water, 1.1 parts of carbomer are added under stirring and continued to be stirred until swelling is uniform, 8 parts of glycerol and 6 parts of cellulose derivatives are added to the container and the remaining amount of water is added, and stirred to obtain a mixed solution, and the mixed solution is added to the swollen carbomer and stirred to obtain a colorless and transparent supporting matrix;

[0038] Before using the soil conditioner, Huaguangmycin and deionized water are mixed in proportion to prepare a protective agent, and then the protective agent is fully mixed with the slow-release composite antibacterial agent and the supporting matrix before use, and then the soil conditioner is sprinkled into the soil.

[0039] Embodiment 2:

[0040] The ion exchange resin is pretreated, and the resin is mixed and stirred with the bis(hydroxymethyl)imidazolidinyl urea solution at 45°C and pH 4 for 45 minutes to ensure that the antibacterial agent can be fully adsorbed on the resin. After the mixing is completed, the adsorption efficiency of the mixture on the antibacterial agent and the stability of the mixture are tested. The mixed resin should be properly stored and handled to maintain the antibacterial performance and stability;

[0041] Then, 0.06 parts of alginate and 4 parts of starch are dissolved in an appropriate amount of water, and 0.8 parts of carbomer are added under stirring and continued to be stirred until swelling is uniform, 7 parts of glycerol and 5 parts of cellulose derivatives are added to the container and the remaining amount of water is added, and stirred to obtain a mixed solution, and the mixed solution is added to the swollen carbomer and stirred to obtain a colorless and transparent supporting matrix;

[0042] Before using the soil conditioner, Huaguangmycin and deionized water are mixed in proportion to prepare a protective agent, and then the protective agent is fully mixed with the slow-release composite antibacterial agent and the supporting matrix before use, and then the soil conditioner is sprinkled into the soil.

[0043] Table 1- Detection data of effective antibacterial components after spreading of improver

[0044]

[0045] The inspection method in Table 1 is to randomly take multiple groups of 1kg soil samples in the test field after a predetermined time and add 1L of water to each sample for full soaking, then put the samples into a high-speed centrifuge for dehydration, and detect the content of the antibacterial agent in the separated water.

[0046] It can be seen from Table 1 that the soil with soil conditioner added still has a better antibacterial effect than the soil without soil conditioner added after a long time.

[0047] Table 2-Test data of soil physical properties and nutrient content after spreading of amendments

[0048]

[0049] Table 3-Test data of soil pest resistance after spreading of amendments

[0050]

[0051] Table 4-Test data of soil disease resistance after spreading of improvers

[0052]

[0053] It can be seen from Tables 2, 3 and 4 that the soil conditioners significantly improved the physical properties, nutrient content and pest and disease resistance of the soil after spreading.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil conditioner for long-term inhibition of pests and diseases, characterized in that: The soil conditioner is composed of 1-2 parts of a slow-release composite antibacterial agent, 0.3-0.5 parts of a protective agent and 10-15 parts of a supporting matrix, calculated by weight.

2. The soil conditioner for long-term inhibition of pests and diseases according to claim 1, characterized in that: The antibacterial material in the sustained-release composite antibacterial agent is one of imidazolidinyl urea and bis(hydroxymethyl)imidazolidinyl urea, the protective agent is composed of huaguangmycin and deionized water, and the concentration of huaguangmycin is 20-60 mg / L.

3. The soil conditioner for long-term inhibition of plant diseases and insect pests according to claim 1, characterized in that: The carrier matrix is ​​an aqueous gel matrix, and the carrier matrix is ​​composed of 80-100 parts of water, 7-9 parts of glycerol, 5-7 parts of cellulose derivatives, 0.8-1.2 parts of carbomer, 0.04-0.06 parts of alginate and 2-4 parts of starch.

4. A method for preparing a soil conditioner for long-term inhibition of pests and diseases according to any one of claims 1 to 3, characterized in that: The preparation method of the soil conditioner comprises the following steps: S1. preparing a sustained-release composite antibacterial agent; S2, preparing a supporting matrix; S3, mixing the sustained-release composite antibacterial agent and the supporting matrix according to a predetermined ratio and sealing them for later use; S4. Before applying the soil conditioner, mix Huaguangmycin and deionized water in proportion to prepare a protective agent.

5. The method for preparing a soil conditioner for long-term inhibition of pests and diseases according to claim 4, characterized in that: In step S1, the preparation of the sustained-release composite antibacterial agent includes the following steps: Step 1, pretreating the ion exchange resin; Step 2, mixing the resin and the antibacterial agent solution and controlling the temperature, pH value and mixing time to ensure that the antibacterial agent can be fully adsorbed onto the resin; Step 3: After the mixing is completed, the adsorption efficiency of the mixture on the antibacterial agent and the stability of the mixture are tested; Step 4: The mixed resin should be properly stored and handled to maintain antibacterial properties and stability.

6. The method for preparing a soil conditioner for long-term inhibition of plant diseases and insect pests according to claim 4, characterized in that: In step S2, the preparation of the supporting matrix comprises the following steps: Step 1, dissolve alginate and starch in an appropriate amount of water, add carbomer while stirring and continue stirring until swelling is uniform; Step 2, adding glycerol and cellulose derivatives into a container and adding the remaining amount of water, and stirring to obtain a mixed solution; Step 3: Add the mixed solution into the carbomer swollen material and stir evenly to obtain a colorless and transparent supporting matrix.

7. The method for preparing a soil conditioner for long-term inhibition of plant diseases and insect pests according to claim 5, characterized in that: The mass ratio of the antibacterial agent solution to the resin in the step 2 is preferably (0.8-1.7): (98.3-99.2).

8. The method for preparing a soil conditioner for long-term inhibition of pests and diseases according to claim 5, characterized in that: The temperature of stirring the antibacterial agent solution and the resin in step 2 is controlled to be 30-45°C.

9. The method for preparing a soil conditioner for long-term inhibition of pests and diseases according to claim 5, characterized in that: The pH value range of the antibacterial agent solution and the resin in the step 2 is 2-4, and the mixing time in the step 2 is 30-45 minutes.

10. Use of the soil conditioner for long-term inhibition of plant diseases and insect pests according to any one of claims 1 to 3 in improving soil pest resistance.

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