Synergistic weeding composition

Abstract

The invention relates to a synergistic weeding composition. The synergistic weeding composition comprises weeding activity components consisting of pyribenzoxim and pyrazosulfuron-ethyl, and is suitable for selective control of weeds in beneficial crops such as rice. The synergistic weeding composition comprises the weeding activity components consisting of the pyribenzoxim and the pyrazosulfuron-ethyl, wherein the weight ratio of the pyribenzoxim to the pyrazosulfuron-ethyl is 100: 1 to 1:100. The synergistic weeding composition also can comprise a safety agent. The novel weeding composition is prepared through ternary complex formulation of the pyribenzoxim and the pyrazosulfuron-ethyl, so that defects caused by single use of the pyribenzoxim can be effectively overcome, a weed killing spectrum for the weeds is enlarged, and at the same time generation of drug resistance is postponed. The weeds in rice fields can be basically removed by one-time use of the weeding composition, so that the weeding composition is labor saving, time saving, and effort saving, can alleviate some of the rural labor shortage, and at the same time can play a certain role in increase of both production and income of the rice. The weeding composition shows an enhanced effect on the control of broadleaf weeds, gramineae weeds and cyperaceae weeds of the rice fields.

Description

technical field [0001] The present invention relates to a synergistic herbicidal composition, which contains saflufenacil and pyrazosulfuron-methyl as herbicidal active components, and is suitable for selectively controlling weeds in beneficial crops such as rice. Background technique [0002] Rice is one of the main food crops in the world. Nearly half of the world's population, including almost the entire population of East Asia and Southeast Asia, live on rice, and its production covers all continents except Antarctica. In the late last century, the average annual rice output in the world was about 400 billion kilograms, and the planting area was about 145 million hectares. Rice is also the most important food crop in my country. my country's rice sowing area accounts for 1 / 4 of the country's food crops, about 35 million hectares per year, while the output accounts for more than half. Regardless of the planting area and output, it ranks first in my country's food crops....

AI Technical Summary

Problems solved by technology

[0012] In actual use, saflufenacil has low activity on some perennial sedges, and some perennial weeds will be severely damaged after continuous use for many years, such as flat stalk, cow felt, Japanese sedge, etc.

The above weeds need to be controlled again, which is labor-intensive, time-consuming and labor-intensive

In addition, its weeding speed is slow. Although the growth of weeds can be inhibited after application, it usually takes 2 weeks for the weeds to die

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