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Construction method of gel-based pesticide system for controlled release and migration driven by electricity, constructed pesticide system and its application

A construction method and electric drive technology, applied in the field of pesticide controlled release, can solve the problems of difficulty in accurately achieving controlled release, complicated preparation, etc., and achieve the effects of low cost and simple preparation method.

Active Publication Date: 2022-03-04
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the pesticide slow / controlled release system in the prior art has the disadvantages that it is difficult to accurately achieve controlled release and the preparation is complicated.

Method used

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  • Construction method of gel-based pesticide system for controlled release and migration driven by electricity, constructed pesticide system and its application
  • Construction method of gel-based pesticide system for controlled release and migration driven by electricity, constructed pesticide system and its application
  • Construction method of gel-based pesticide system for controlled release and migration driven by electricity, constructed pesticide system and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A method for constructing a gel-based nano-pesticide system driven by electricity for controlled release and migration, comprising the following steps:

[0048] (1) Take 0.5g attapulgite powder and disperse it in 20mL glyphosate aqueous solution. Attapulgite-glyphosate was formed on attapulgite, and the attapulgite-glyphosate complex was collected by centrifugation and dried overnight at 60 °C.

[0049] (2) Weigh 0.1 g of attapulgite-glyphosate and dissolve it in 5 mL of water, add 0.1 g of sodium alginate to it, stir at 200 rpm to form a uniform suspension, and then stir the suspension dropwise under magnetic stirring Inject into 50mL calcium chloride aqueous solution to obtain hydrogel balls with electrical stimulation response, that is, to obtain a gel-based nano-pesticide system driven by electricity for controlled release and migration. The mass concentration of calcium chloride aqueous solution in this example is 0.2 %.

[0050] The construction method of the pe...

Embodiment 2

[0052] A method for constructing a gel-based nano-pesticide system driven by electricity for controlled release and migration, comprising the following steps:

[0053] (1) Take 4.5g attapulgite powder and disperse it in 80mL glyphosate aqueous solution, the mass volume concentration of glyphosate aqueous solution is 4mg / mL in the present embodiment, and stir under 200rpm, make glyphosate molecule load on Attapulgite-glyphosate was formed on attapulgite, and the attapulgite-glyphosate complex was collected by centrifugation and dried overnight at 60 °C.

[0054] (2) Weigh 0.5g of attapulgite-glyphosate and dissolve it in 15mL of water, and add 0.6g of sodium alginate to it, stir at 200rpm to form a uniform suspension, and then stir the suspension dropwise under magnetic stirring Inject into 50mL calcium chloride aqueous solution to obtain hydrogel balls with electrical stimulation response, that is, to obtain a gel-based nano-pesticide system driven by electricity for controlle...

Embodiment 3

[0057] A method for constructing a gel-based nano-pesticide system driven by electricity for controlled release and migration, comprising the following steps:

[0058] (1) Take 6.0g attapulgite powder and disperse it in 100mL glyphosate aqueous solution, the mass volume concentration of glyphosate aqueous solution is 10mg / mL in the present embodiment, and stir under 200rpm, make glyphosate molecule load on Attapulgite-glyphosate was formed on attapulgite, and the attapulgite-glyphosate complex was collected by centrifugation and dried overnight at 60 °C.

[0059] (2) Weigh 1.8g of attapulgite-glyphosate and dissolve it in 25mL of water, add 1.0g of sodium alginate to it, stir at 200rpm to form a uniform suspension, and then stir the suspension dropwise under magnetic stirring Inject into 50mL calcium chloride aqueous solution to obtain hydrogel balls with electrical stimulation response, that is, to obtain a gel-based nano-pesticide system driven by electricity for controlled ...

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Abstract

The invention discloses a method for constructing a gel-based nano-pesticide system driven by electricity for controlled release and migration, and relates to the technical field of controlled release of pesticides. The invention comprises the following steps: (1) dispersing attapulgite powder in an aqueous pesticide solution, stirring , centrifuge, collect the attapulgite-pesticide complex and dry it, and the pesticide is an anionic pesticide; (2) dissolve the attapulgite-pesticide compound in water, and add sodium alginate, stir to form a suspension, and then stir in a magnetic The suspension is injected into the calcium chloride solution to obtain a hydrogel, that is, a gel-based nano-pesticide system with controlled release and migration driven by electricity. The present invention also provides the pesticide system constructed by the above construction method and its application. The beneficial effect of the present invention is that: the present invention provides a simple, low-cost, prospective method for controlled release and precise delivery of pesticides, and the carrier will not pollute the environment, and the release and migration of pesticides can be controlled by electric drive, Thereby acting on target crops.

Description

technical field [0001] The invention relates to the technical field of controlled release of pesticides, in particular to a construction method of a gel-based pesticide system for controlled release and migration driven by electricity, the constructed pesticide system and its application. Background technique [0002] Pesticides play an important role in agricultural production activities. They are quite effective methods for controlling weeds. They are of great significance for promoting stable and increasing grain production, increasing farmers' income, and ensuring national food security. However, the utilization rate of pesticides in my country is relatively low, only about 30%. Traditional pesticides are easy to enter the environment through runoff, volatilization and leaching, which not only cause serious environmental problems, but even endanger human health. Therefore, the healthy and sustainable development of modern agriculture urgently requires us to adopt new tec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/10A01N25/08A01N57/20A01P13/00A01M21/04
CPCA01N25/10A01N25/08A01N57/20A01M21/043
Inventor 吴正岩张丽红蔡冬清
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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