Compound herbicide after wheat seedling stage

Abstract

The invention relates to the technical field of pesticides, and discloses a compound herbicide after wheat seedling stage. The compound herbicide comprises two active ingredients: mesotrione and fluroxypyr at a weight ratio of (1.5:10)-(7.5:2); and preferentially, the content of the mesotrione and fluroxypyr accounts for 5-85% of the compound herbicide by mass. The compound herbicide disclosed by the invention can prevent and kill the annual broadleaf weeds, particularly the resistant broadleaf weeds such as descurainia sophia, euphorbia helioscopia, shepherd's purse and the like in the wheat field, and also can remove part of the grassy weeds, and the weeding effect is obvious; and moreover, the compound herbicide has an obvious synergistic effect, and does not influence the afterreap crop, thereby being an ideal herbicide.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a post-emergence compound herbicide for wheat. Background technique [0002] Wheat is one of the main food crops in northern my country. The perennial planting area in China is more than 30 million hectares, second only to rice planting area. The area of ​​wheat field weed damage accounts for more than 30% of the total planting area, of which more than 8% are seriously damaged, and the yield is generally reduced by more than 15%, and the harvest can be completely destroyed in severe cases. Therefore, the proportion of herbicides used in domestic wheat fields is almost 100%, and the amount of herbicides used is very large. At present, the main herbicides used to control broad-leaved weeds after emergence in domestic wheat fields are: Trisulfuron-methyl, Dicamba, Metsulfuron-methyl, Thisulfuron-methyl, Isoproturon, etc. However, due to years of use, many weeds have developed ...

AI Technical Summary

Problems solved by technology

It is mainly used to control various annual broad-leaved weeds. It has better effects on wormwood, shepherd's purse, broken rice shepherd's purse, Maijiagong, quinoa, and amaranthus, and it has better effects on Kochia, chickweed, Polygonum, and pig's weed. It also has a certain control effect, but it has no significant effect on field thistle, Polygonum curliculus, field bindweed, and lacquer, and it is ineffective against grass weeds such as wild oats, kangaroo, brome, and sycamore

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