Herbicidal composition for rice field

Abstract

The invention discloses a comprehensive herbicide for rice paddy fields. Effective constituents are fenpyroxim and pretilachlor or mefenacet, the weight percentage of the fenpyroxim to the pretilachlor or the mefenacet is between 1 to 1 and 1 to 20, and the preferred weigh ratio is between 1 to 2 and 1 to 10. A herbicide composition can effectively prevent and kill grassy weeds in the rice paddy fields such as barnyard grasses, semen euphorbiae lathyridis and so on at one time, and can also control broad leaved weeds such as rotala indica, Eleocharis acicularis and so on.

Description

technical field [0001] The invention relates to a herbicide composition and application thereof, in particular to a broad-spectrum herbicide with special effects on barnyardgrass, stephaelia japonica and the like in paddy fields. Background technique [0002] Rice is one of the main food crops in my country. According to statistics, the total sown area of ​​crops in the country in 2002 was 156 million hectares, of which 28.81 million hectares were sown by rice, accounting for about 18.5% of the total sown area in the country, and rice production accounted for 39.23% of the total grain output. %, rice is the staple food of about 60% of the population in the country, so the increase or decrease of rice production has a decisive impact. But all the time, all kinds of weeds have influenced the yield of paddy rice, according to investigation, its paddy paddy yield loss of weed damage field is generally 10-20%, serious loss 40-50%. In recent years, a labor-saving and water-saving ...

AI Technical Summary

Problems solved by technology

[0007] Cyhalofop-ethyl is the only one of the aryloxyphenoxypropionic acid herbicides that is highly safe for rice. People have been studying how to apply it more efficiently. Mixed use of herbicides for weeds may show antagonism, which is manifested as a decrease in the efficacy of Qianjin, such as when mixed with 2,4-D, dimethyltetrachloride, sulfonylureas, bendazone, and cap irrigation. orange resistance

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