Sulfonylurea herbicide and preparation method thereof

Abstract

The invention discloses a sulfonylurea herbicide and a preparation method thereof. The sulfonylurea herbicide is prepared from the following components in parts by mass: 2 to 9 parts of halosulfuron-methyl, 16 to 22 parts of a quinclorac solid agent, 60 to 70 parts of 2-methyl-4-chloroisooctyl ester, 15 to 25 parts of water, 5 to 10 parts of hydroxylamine, 32 to 38 parts of s-triazine, 52 to 58 parts of ethyl chloroformate, 3 to 9 parts of a wetting agent and 5 to 10 parts of a spinetoram solid agent. The sulfonylurea herbicide prepared by the method is relatively low in cost, and the reactionsteps are obviously reduced; meanwhile, the spinetoram solid agent is added, so that the insecticide has good prevention and control effects on plutella xylostella, beet armyworms, leaf miners, thrips, prodenia litura and pod borers, can substantially reduce the generation of pests, can flexibly control the addition amount of the sulfonylurea herbicides by preparing the sulfonylurea herbicide into a solid agent, can conveniently carry out targeted treatment on seriously damaged plants, and has a certain market promotion prospect.

Description

technical field [0001] The invention relates to the technical field of sulfonylurea herbicides, in particular to a sulfonylurea herbicide and a preparation method thereof. Background technique [0002] Sulfonylureas (SU) are oral hypoglycemic drugs with the earliest application, the most variety, and the most extensive clinical application. SU drugs can be divided into the first generation and the second generation. Glimepiride developed in recent years is It is called the third-generation SU drug because of its small dosage, certain effect of improving insulin resistance, and reducing insulin dosage; the development of herbicide varieties began in the late 1970s. In 1978, Levitt reported that chlorsulfuron could effectively control most weeds in wheat and flax fields by pre-emergence soil treatment or post-emergence stem and leaf treatment at very low dosage. [0003] However, the herbicidal effect of the sulfonylurea herbicide prepared by the existing method is relatively...

AI Technical Summary

Problems solved by technology

[0003] However, the herbicidal effect of the sulfonylurea herbicides prepared by the existing method is relatively poor, and multiple reaction procedures are adopted, which increases the preparation cost