Herbicidal composition for controlling harmful weeds in areas where corn is grown and use thereof

Abstract

The invention relates to a weeding composition used for controlling harmful weeds in corn growth areas, and an application. The weeding composition contains a safety agent A and an active component Bof effective weeding quantity as effective components; the safety agent A is a phenyl substituted oxazole isoxazole formamide compound which is shown as the following formula; and the weight ratio ofcomponent A to B containing effective quantities is 1-4 : 1-5. The application of the weeding composition used for controlling harmful weeds in corn growth areas is also provided. The composition caneffectively control most of weeds in corn fields, and basically has no damage to crops, so that secondary phytotoxicity cannot be brought, and the contained safety agent can effectively avoid phytotoxicity of a halosulfuron-methyl herbicide on corns. Compared with herbicide single doses, the weeding composition enlarges weed controlling spectrums, so that the phytotoxicity problems caused by the halosulfuron-methyl herbicide can be avoided, the occurrence of weed resistance can be delayed, and safety for the corns can be realized.

Description

technical field [0001] The invention relates to the technical field of herbicides, in particular to a herbicide composition for preventing and controlling harmful weeds in areas where corn grows and uses thereof. Background technique [0002] With the development of economy and society, the world's population has increased by leaps and bounds for 30 consecutive years. In 2016, the world's population has exceeded the 7.3 billion mark. However, the area of ​​arable land worldwide is decreasing due to environmental deterioration, soil erosion and other reasons. It has become a hot topic in agricultural research to reduce agricultural losses and increase food production through effective control of weeds in farmland. Sulfonylurea herbicides are the most widely used and most diverse herbicides in the world today. These herbicides have the advantages of high activity, low toxicity, low dosage and high selectivity. Their targets are amino acids in plants. The enzyme acetolactate ...

AI Technical Summary

Problems solved by technology

Some corn varieties have high drug resistance, and the inhibition effect is not obvious, but some varieties are more sensitive, and the inhibition rate of plant height reaches about 10%.

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