Method for controlling loss of pesticide at high efficiency and low cost

A pesticide loss and low-cost technology, applied in the agricultural field, can solve the problems that the release rate of diseases and insect pests is difficult to match, the control effect cannot be achieved, and the slow-release efficiency is not high, so as to achieve the effect of reducing the frequency of pesticide application, abundant raw materials, and simple process

Active Publication Date: 2012-07-18
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

Although the existing pesticide slow-release technology has achieved varying degrees of success, there are still more or less problems, such as low slow-release efficiency, secondary pollution, etc., and most of them are difficult to scale up due to complex processes and high costs. Promote application
Since the slow-release technology in our country is still relatively backward at present, the preparation technology of slow-release materials is still immature, and it is difficult to accurately and scientifically control the release rate of pesticides. In addition, there are many factors affecting the occurrence of pests and diseases, and the rules are relatively complicated. Therefore, the release rate and pests and diseases It is difficult to match the occurrence pattern, and it is easy to cause insects without medicine or medicine without insects, which not only causes the loss and waste of pesticides, but also fails to achieve the ideal control effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Colloidal grade attapulgite, diatomaceous earth, kaolin, wood chips, chitosan, nonionic polyacrylamide, and pregelatinized starch are mixed according to the mass ratio of 75:35:30:15:15:3:15 Compounding is carried out to obtain a loss control agent, wherein the particle size of attapulgite, diatomite, kaolin and wood chips is required to be 250 mesh, and the particle size of chitosan, polyacrylamide and pregelatinized starch is required to be 100 mesh. Then, according to the mass ratio of 15%, it is evenly added into the liquid insecticide, and the loss-controlling pesticide granule is obtained by shaking granulation.

Embodiment 2

[0022] Example 2: Colloidal grade attapulgite, diatomite, kaolin, wood chips, chitosan, non-ionic polyacrylamide, and pregelatinized starch are used in a mass ratio of 100:40:25:20:20:5:10 Compounding is carried out to obtain the loss control agent, wherein the particle size requirement of attapulgite, diatomaceous earth, kaolin and wood chips is 200 mesh, and the particle size requirement of chitosan, polyacrylamide and pregelatinized starch is 150 mesh. Then, according to the mass ratio of 20%, it is evenly added to the powder insecticide to obtain the loss-controlling pesticide powder.

Embodiment 3

[0023] Embodiment 3: Colloidal grade attapulgite, diatomaceous earth, kaolin, wood chips and pregelatinized starch are compounded according to the mass ratio of 75:20:40:10:10 to obtain the loss control agent, and then through high-speed shearing (rotating speed 15,000 rpm) for 20 minutes, and the particle size is required to be 700 mesh. Then, according to the mass ratio of 20%, it is evenly added to the insecticide emulsifiable concentrate (chlorpyrifos), ultrasonicated for 10 minutes, and then packaged to obtain the loss-controlling chlorpyrifos emulsion. The control effect (%) of chlorpyrifos and ordinary chlorpyrifos on rice planthoppers, the dose is 1000 g / ha, and the stem and leaf spray is used:

[0024] 1 day

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PUM

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Abstract

The invention discloses a method for controlling loss of a pesticide at high efficiency and low cost, that is to say, a compounding ingredient of colloid-level attapulgite, kieselguhr, kaolin, sawdust, chitosan, non-ionic polyacrylamide and pregelatinized starch is added into the pesticide according to a certain proportion. According to the invention, the volatilization and the leaching loss of the pesticide can be effectively reduced, the pesticide effect is prolonged, the application frequency and the amount are decreased, a pesticide storehouse can be formed on the leaf surface and the soil surface, the pesticide can be continuously and stably provided as required at any time, and a situation that no pesticide is applied to the insect cannot be formed, so that the plant diseases and insect pests can be controlled economically, effectively and reasonably, and the pollution of the pesticide on the human health and the environmental pollution is reduced to the lowest limit. The method for controlling the loss of the pesticide at high efficiency and low cost has the advantages of specific mechanism, abundant raw materials, low cost, environmental friendliness, simple process, labor saving and time saving, both production and income increasing, easy accepting by farmers, and larger market prospect.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a method for controlling pesticide loss with high efficiency and low cost. Background technique [0002] Pesticides are the guarantee for agricultural production and bumper harvests. The harvest of crops lost due to diseases, insects, weeds, and rodents in the world is equivalent to one-third of the potential harvest. If the use of drugs is stopped or serious inappropriate use of drugs, the harvest will be reduced by 25-40% after one year. Years later it will be reduced by 40-60% or even become extinct. In my country, on average, 25 million tons of grain, 400,000 tons of cotton, 8 million tons of vegetables, and 3.3 million tons of fruit are saved every year due to pesticides, reducing economic losses by about 30 billion yuan. The loss and decomposition of pesticides caused by wind, sun, and rain in traditional pesticide application methods usually reach 60%-80%, resulting in problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/12A01N25/04A01N57/16A01P7/04
Inventor 蔡冬清吴正岩余增亮张静王宁程珺洁蔡传杰张彩丽
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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