A herbicide for paddy fields

Abstract

A herbicide for paddy rice field contains pyrazosulfuron-ethyl, cyhalofop-butyl and assistant. It is applied only once.

Description

technical field [0001] The invention relates to a paddy field herbicide. Background technique [0002] Rice is a large food crop in my country, but the development of herbicides in rice fields is very slow. The cyhalofop-ethyl used is a diphenyl ether herbicide and is a selective herbicide for paddy fields. It can only be used for stem and leaf treatment, and the pre-emergence treatment is ineffective. , Applying pesticides at the 2-3 leaf stage of grass weeds. However, pyrazosulfuron-methyl is generally used 3-10 days after sowing, and it only has an inhibitory effect on barnyard grass. The separate use of these two herbicides can only control grass weeds or broad-leaved weeds, but the control effect on the vicious weeds of paddy fields, A. japonicus and barnyardgrass is not good. Moreover, with the increase in the amount of herbicides used in rice fields, the resistance of weeds is becoming more and more serious, and the harm of vicious weeds such as Qianjinzi and barny...

AI Technical Summary

Problems solved by technology

The single use of these two herbicides can only control grass weeds or broad-leaved weeds, but the control effect on the vicious weeds of paddy fields is poor.

Moreover, with the increase in the amount of herbicides used in rice fields, the resistance of weeds is becoming more and more serious, and the harm of vicious weeds such as Qianjinzi and barnyardgrass is also more serious.