Herbicide composition containing halauxifen-methyl and topramezone

Abstract

The invention belongs to the technical field of farm chemical herbicides, and particularly relates to a herbicide composition containing halauxifen-methyl and topramezone. The herbicide composition is suitable for corn fields. The weight ratio of the active ingredient halauxifen-methyl to the active ingredient topramezone ranges from 1:0.6 to 1:40. According to the herbicide composition, the weed control spectrum is broadened, the control effect is enhanced, the situation that the herbicide resistance of weeds can be rapidly generated when weed control is performed with a single herbicide is avoided, generation of the herbicide resistance of weeds is retarded, the dosage is reduced, the use cost is lowered, and environmental pollution is relieved.

Description

technical field [0001] The invention belongs to the technical field of pesticides and herbicides, and in particular relates to a herbicide composition suitable for cornfields containing halfenidyl and fenflumezone. Background technique [0002] Corn is one of the three major food crops in my country, and it is also an important feed and industrial raw material. In 2004, my country's corn planting area reached 25.58 million ha 2 , ranking second in the world, but the yield per unit area is 5154kg / hm 2 , accounting for only about 50% of the United States, Israel, New Zealand and other countries. Weed damage is one of the main factors affecting crop yield, and the annual weed damage area of ​​cornfields in my country is about 6.67 million hm2. 2 , The yield reduction reaches more than 10%, and the fields with severe weed damage even have no harvest [Wei Shouhui et al., Journal of Plant Protection, Vol. 33 No. 2]. [0003] The survey results in the 1980s showed that the weed...

AI Technical Summary

Problems solved by technology

However, with the long-term and large-scale promotion and application of herbicides, the problems of weed resistance, population succession and phytotoxicity in farmland weed control are becoming more and more serious, which seriously affects the high yield and harvest of corn and the safety of subsequent crops.

The change of grass phase in the field needs to increase the dosage of conventional herbicide varieties to maintain a certain control effect, but with the increase of herbicide dosage, the pollution to the environment is becoming more and more serious, and it will destroy the biodiversity of farmland and cause weeds Generation of drug resistance [Wei Shouhui et al., Acta Plant Protection, Vol. 33, No. 2]

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