Notopterygium root extract for alleviating damage of acetochlor to rice

Abstract

The present invention relates to one kind of notopterygium root extract for alleviating damage of acetochlor to rice. Notopterygium root material, after being stoved, crushed, sieved, is refluxed in some container with alcohol as organic solvent in water bath to extract, and the extract is obtained after concentration. The notopterygium root extract is water diluted and sprayed directly to rice or soil after applying metolachlor to protect rice from damage of acetochlor with safety to crop and no environmental pollution.

Description

field of invention

[0001] The invention relates to a method for extracting the acetochlor safener from plant materials, in particular to the safener and its application method, more specifically, the present invention relates to the use of the acetochlor safener on rice. Background technique

[0002] Among the chloroacetamide herbicides, acetochlor has a higher herbicidal activity and a wide range of applications. It is a high-efficiency, broad-spectrum selective pre-emergent soil treatment herbicide, which is effective for controlling annual grass weeds. At present, my country has successfully applied acetochlor and its mixture to control weeds in rice fields. However, because rice is sensitive to acetochlor, acetochlor is likely to cause phytotoxicity to young rice when used in paddy fields, so the application of acetochlor in paddy fields is strictly limited. Herbicide safeners are a class of substances that can reduce the toxicity of herbicides to crops, increase the tol...