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Novel high-efficiency method for controlling flow-away and degradation of pesticides

A pesticide loss and pesticide technology, applied in the field of pesticides, to achieve the effect of reducing pesticide residues, controlling the degradation of pesticide residues, and being environmentally friendly

Inactive Publication Date: 2014-06-04
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

For degradation control technology, there are few reports now, this patent provides a method with high efficiency and low cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Add 400 mesh colloidal grade attapulgite to tap water to make a suspension with a concentration of 30 g / L, stir at 5000 rpm for 10 minutes, let stand for 20 minutes, discard 1 / 4 volume of the mud in the lower layer, and keep the rest suspension;

[0027] (2) Add ferric chloride to the remaining suspension, keep the concentration of ferric chloride at 2 M, stir and react at 2000 rpm at 30°C for 20 minutes, let it stand for 20 minutes, discard the supernatant, and then add tap water to make it reach the original concentration, and then let it stand to remove the supernatant, and the obtained mud is iron ion-type attapulgite;

[0028] (3) Add 20% mass fraction of polyvinyl alcohol to the mud, stir evenly, and irradiate with a high-energy electron beam with an energy of 10 MeV and a dose of 40 kGy for 10 minutes, and the grafting reaction forms attapulgite-polyvinyl alcohol composite thing;

[0029] (4) Add 20% mass fraction of hydrazine hydrate to the attapulgite-pol...

Embodiment 2

[0035] (1) Add 300 mesh colloidal grade attapulgite to tap water to make a suspension with a concentration of 20 g / L, stir at 6000 rpm for 10 minutes, let stand for 20 minutes, discard 1 / 5 of the volume of the mud in the lower layer, and keep the rest suspension;

[0036] (2) Add ferric chloride to the remaining suspension, keep the concentration of ferric chloride at 1.5 M, stir and react at 2000 rpm at 30°C for 15 minutes, let it stand for 20 minutes, discard the supernatant, and then add tap water to make it reach the original concentration, and then let it stand to remove the supernatant, and the obtained mud is iron ion-type attapulgite;

[0037] (3) Add 15% vinyl alcohol to the mud, stir evenly, and irradiate with a high-energy electron beam with an energy of 10 MeV and a dose of 30 kGy for 5 minutes, and graft reaction forms attapulgite-polyvinyl alcohol composite ;

[0038] (4) Add 15% mass fraction of hydrazine hydrate to the attapulgite-polyvinyl alcohol composite ...

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PUM

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Abstract

The invention discloses a novel high-efficiency method for controlling flow-away and degradation of pesticides. The method includes that a loss control agent and a degradation agent are added into the pesticides in accordance with a certain proportion. The method can effectively reduce volatilization loss and elution loss of the pesticides, prolongs pesticide effect, lowers use frequency, reduces use dosage, can enable a pesticide bank to be formed on leaf surfaces and soil surfaces, enables the effect preserving period to be long, can control a degradation period of the pesticides, lowers pesticide residues of fruits and vegetables to the maximum extend, and not only can control plant diseases and insect pests economically, effectively and reasonably, but also lowers damage from the pesticides to health of human bodies and pollution to environment to the lowest extend. The method is unique in mechanism, ample in raw material, low in cost, environmental-friendly, simple in technology, labor-saving, and prone to being received by farmers, and has large market prospects.

Description

technical field [0001] The invention relates to a method for controlling pesticide loss with high efficiency and low cost, and belongs to the technical field of pesticides. Background technique [0002] The annual output of pesticides in the world is more than 5 million tons. While controlling pests and diseases and increasing production, pesticides also have adverse effects on human living environment, health and even the entire ecosystem. According to research, only 10%-25% of the pesticides in the field spraying are attached to the plants, and only about 30% of the pesticides are attached to the plants when spraying, and another 40%-60% fall on the ground, and 10%-30% of the pesticides are attached to the plants. % floats in the air. A large number of unused pesticides enter the soil and water bodies through volatilization, air transport, dry and wet deposition, surface runoff and infiltration under the action of wind and rain, causing damage to air, soil, surface water...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/08A01N25/32
Inventor 蔡冬清吴正岩张欣王宁王龙海向育斌张桂龙余增亮吴丽芳
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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