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A kind of composite soil conditioner and its preparation method and application

A soil conditioner and composite technology, which is applied in the field of composite soil conditioner and its preparation, can solve the problems of difficult diffusion, excessive soil oily substances, pollute the environment, etc., and achieve the effect of preventing soil agglomeration and ensuring the bactericidal effect.

Active Publication Date: 2021-09-17
LISHUI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the above-mentioned defects, many studies have used microcapsules to wrap bactericides to prepare bactericidal capsules, which can solve the problems of low sterilization efficiency and environmental pollution. However, due to the large particles of bactericidal capsules, it is difficult to diffuse in the soil. It is easy to gather around the release point, and it is difficult to meet the needs of use
And in the process of releasing the bactericidal essential oil into the soil, it is easy to cause too much oily substance in the local soil, which will inhibit the growth of plants
Although some researchers have reduced the harm caused by excessive oily substances by adding various chemical components, it is impossible to achieve slow and controlled release, which is not conducive to the growth of plant roots

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of composite soil conditioner, its preparation method step is as follows:

[0037] (1) Disperse 20 parts of Na-montmorillonite in a beaker filled with 100 parts of distilled water, and then put it into an ultrasonic cleaner to fully disperse for 1 hour. After cooling, add 5 parts of vinylpyrrolidone and 5 parts of hydroxyethyl methacrylate, then add 5 parts of initiator potassium persulfate (KPS) and 5 parts of crosslinking agent N, N, - methylenebisacrylamide (NMBA ), placed in a constant temperature water bath at 50°C to initiate polymerization, the obtained product was washed with methanol solution, cut into small pieces and put into a 50°C oven for drying, after taking it out, it was crushed and sieved with a pulverizer to obtain the modified A modified montmorillonite with slow and controlled water release function;

[0038] (2) Dissolve 40 parts of the core material Litsea pepper essential oil and 5 parts of the shell material A toluene-2,4-diisocyanate in...

Embodiment 2

[0049] A kind of composite soil conditioner, its preparation method step is as follows:

[0050] (1) Disperse 25 parts of Na-montmorillonite in a beaker filled with 300 parts of distilled water, and then put it into an ultrasonic cleaner to fully disperse for 2 hours. Take it out and add 15 parts of vinylpyrrolidone and 10 parts of hydroxyethyl methacrylate, then add 10 parts of initiator potassium persulfate (KPS) and 10 parts of crosslinking agent N, N,-methylenebisacrylamide (NMBA ), placed in a constant temperature water bath at 70°C to initiate polymerization, the obtained product was washed with methanol solution, cut into small pieces and put into an oven at 80°C for drying, and then crushed with a pulverizer and sieved to obtain the modified A modified montmorillonite with slow and controlled water release function;

[0051] (2) Dissolve 30 parts of Litsea chrysanthemum essential oil, 20 parts of Gingeria tomentosa essential oil and 15 parts of capsule shell material ...

Embodiment 3

[0062] A kind of composite soil conditioner, its preparation method step is as follows:

[0063] (1) Disperse 30 parts of Na-montmorillonite in a beaker filled with 500 parts of distilled water, and then put it into an ultrasonic cleaner to fully disperse for 3 hours. Take it out and add 20 parts of vinylpyrrolidone and 15 parts of hydroxyethyl methacrylate, then add 15 parts of initiator potassium persulfate (KPS) and 15 parts of crosslinking agent N, N,-methylenebisacrylamide (NMBA ), placed in a constant temperature water bath at 80°C to initiate polymerization, the obtained product was washed with methanol solution, cut into small pieces and put into a 100°C oven for drying, after taking it out, it was crushed with a pulverizer and sieved to obtain the modified A modified montmorillonite with slow and controlled water release function;

[0064] (2) Dissolve 40 parts of Litsea pepper essential oil, 20 parts of Mao Litsea pepper essential oil and 30 parts of capsule shell m...

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PUM

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Abstract

The invention discloses a composite soil conditioner as well as its preparation method and application. The composite soil improver is composed of bactericidal essential oil as the core material and slow-dissolving polymer as the capsule material. The composite soil conditioner has a strong inhibitory effect on Fusarium oxysporum in the soil, releases slowly, and has a long effective time. At the same time, the capsule shell material can slowly release the components that promote plant growth during degradation. The grafted modified montmorillonite can effectively prevent the damage caused by excessive local oily substances, and can also effectively prevent soil agglomeration and improve the water-holding capacity of the soil.

Description

technical field [0001] The invention belongs to the technical field of soil improvers, and in particular relates to a composite soil improver and its preparation method and application. Background technique [0002] In recent years, with the increase of agricultural production activities and excessive use of chemical fertilizers, the soil structure has been destroyed. In order to maintain soil nutrients, it is necessary to apply soil amendments to the soil to make it more suitable for plant growth. However, there is currently a pathogenic fungus Fusarium in the soil, which can infect almost all kinds of plants, mainly infecting the implanted roots, rhizome junctions and ducts, etc., producing toxins inside the host plant, causing the plants to wither and rot , is a serious soil-borne disease. And it has a strong concealment, and it is difficult to control. The disease caused by Fusarium oxysporum has become one of the most difficult diseases to control. [0003] In previo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/18C09K17/40C09K101/00
CPCC09K17/40C09K2101/00
Inventor 张四海吕耀平
Owner LISHUI UNIV
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