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Compound herbicide for paddy fields

A herbicide and rice field technology, applied in the field of pesticides, can solve the problems of poor selectivity of wet-inserted rice, achieve excellent control effects, significant economic benefits, and reduce the cost of pesticides

Inactive Publication Date: 2018-03-16
ANHUI FENGLE AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This product has poor selectivity to wet-inserted rice when it is applied alone, but it has excellent selectivity to in-line rice when it is used together with chlorpyrifos

Method used

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  • Compound herbicide for paddy fields
  • Compound herbicide for paddy fields
  • Compound herbicide for paddy fields

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Preparation of the film spreading oil of the compound herbicide of the present invention (clorazosulfuron-methyl: pyrazosulfuron-methyl: pretilachlor=5:0.8:31.2)

[0030] 37% Clorazosulfuron-methyl, pyrazosulfuron-methyl and pretilachlor film spreading oil, 37% refers to the percentage of the three active components of clopyrazosulfuron-methyl, pyrazosulfuron-methyl and pretilachlor in the total weight.

[0031] Get 5kg clopyrazosulfuron-methyl, 0.8kg pyrazosulfuron-methyl, 31.2kg pretilachlor, 4% dodecyl alcohol ester as a diffusing agent, 5% nonylphenol polyoxyethylene ether as a dispersing agent, castor oil polyoxyethylene as a diffusing agent Vinyl ether 5%, dispersion medium methyl oleate supplemented to 100kg. After fully mixing and preparing, ball milling, adjustment and packaging, the film-expanding oil agent is obtained.

Embodiment 2

[0032] Embodiment 2: Preparation of the dispersible oil suspension concentrate of the compound herbicide of the present invention (clorazosulfuron-methyl: pyrazosulfuron-methyl: pretilachlor=2:0.4:15.6)

[0033]18% clopyrazosulfuron-methyl, pyrazosulfuron-methyl and pretilachlor dispersible oil suspension concentrate, 18% refers to the percentage of the three active components of clopyrazosulfuron-methyl, pyrazosulfuron-methyl and pretilachlor in the total weight . Take 2kg chlorpyrazosulfuron-methyl, 0.4kg pyrazosulfuron-methyl, 15.6kg pretilachlor, 6kg500#, 8kg EL-20, 2kg aluminum magnesium silicate, and methylated vegetable oil to make up to 100kg. The dispersible oil suspension is obtained through full mixing and preparation, ball milling, adjustment and packaging.

Embodiment 3

[0034] Example 3: Preparation of wettable powder of the compound herbicide of the present invention (clorazosulfuron-methyl: pyrazosulfuron-methyl: pretilachlor=3:2:35)

[0035] 40% chlorpyrazosulfuron-methyl-pyrazosulfuron-pretilachlor wettable powder, 40% refers to the percentage of the three active components of chlorpyrazosulfuron-methyl: pyrazosulfuron-methyl: pretilachlor to the total weight. Take 3kg clopyrazosulfuron-methyl, 2kg pyrazosulfuron-methyl, 35kg pretilachlor, 4kg dispersant NNO, 3kg wetting agent K12, 35kg white carbon black, and light calcium carbonate to make up to 100kg. Wettable powder is obtained through thorough mixing, jet milling and mixing.

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Abstract

The invention discloses a compound herbicide for paddy fields. The effective components of the compound herbicide are halosulfuron, pyrazosulfuron and pretilachlor, wherein the weight ratio of the halosulfuron to the pyrazosulfuron to the pretilachlor is (0.1-80):(0.1-80):(1-80). According to the invention, the weed control spectrum is greatly improved, and most weeds in paddy seedling beds, direct seeding fields, seedling throwing fields and transplanting fields can be effectively prevented and removed, and particularly excellent prevention and removal effects on weeds, which are difficult toprevent and remove, such as leptochloa chinensis, bareet grass, sagittaria pygmaea and polygonaceae weeds are achieved. The herbicide application times and the herbicide usage amount are reduced, theenvironmental pollution is reduced, and the herbicide is safe to paddy.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a compound herbicide for paddy fields. Background technique [0002] Rice is not only the most important food crop in my country, but also one of the main food crops in the world. Nearly half of the world's population, including almost all of East and Southeast Asia, eat rice. It is produced on every continent except Antarctica. Paddy fields have always had a large number of weeds. The area of ​​moderate weed damage accounts for more than 46% of the total planting area, of which more than 11.5% is severely damaged, resulting in a loss of more than 20 billion kilograms of grain every year. Especially in the Northeast rice region, weeds such as Sagittarius have occurred seriously in recent years, and there are no effective control measures before emergence. Medication after seedlings and before tillering will affect the tillering of rice. If the application is too late, it w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/36A01N37/22A01P13/00
CPCA01N37/22A01N47/36
Inventor 龚国斌胡华海张帮林孙永强
Owner ANHUI FENGLE AGROCHEM
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