Herbicidal composition containing rimsulfuron and diflufenzopyr and application thereof

Abstract

The invention belongs to the field of pesticides, and discloses a herbicidal composition containing rimsulfuron and diflufenzopyr and application thereof. The rimsulfuron and the diflufenzopyr serve as main active ingredients of the herbicidal composition, the rimsulfuron and the diflufenzopyr account for 10 to 85 percent of the total mass of the herbicidal composition, and the mass ratio of the rimsulfuron to the diflufenzopyr is 1-70:1-80. The herbicidal composition is applied to preparation of herbicides for controlling postemergence weeds in a corn field, and particularly has an obvious effect when used for preparing herbicides for controlling various grass and broadleaf weeds in the corn field. Compared with single-component herbicide, the herbicidal composition reduces dosage, delays the weed resistance, has broad herbicidal spectrum and acts for a long time on the premise of improving the herbicide effect, and is safe for corn and afterculture crops.

Description

technical field [0001] The invention belongs to the field of pesticides, and relates to a post-emergence herbicidal composition in a corn field, in particular to a herbicidal composition containing rimsulfuron-methyl and diflufenzole and an application thereof. Background technique [0002] Corn is not only an important food crop, but also an important feed crop. It is known as the "king of feed". In recent years, with the development of animal husbandry, food processing and wine making, the market demand continues to increase. my country is a major producer of corn in the world, with an annual planting area of ​​21.4 million ha 2 , accounting for 18.9% of the acreage of grain crops, ranking third after rice and wheat. It is divided into spring sowing and summer sowing. In the northern spring sowing corn area, mainly in the three northeastern provinces, Inner Mongolia and Ningxia, the planting area is stable at more than 6.5 million hectares, accounting for about 36% of the...

AI Technical Summary

Problems solved by technology

However, due to the high price of rimsulfuron-methyl, high unit use cost, and high doses are prone to phytotoxicity, sales and use are greatly restricted.

[0006] At present, the herbicidal compositions for cornfields are limited by the safety of crops, and the herbicidal spectrum is also limited. Using a single herbicidal composition alone cannot completely and effectively control the occurrence of weeds in cornfields. Moreover, some herbicidal compositions are highly water-soluble Or if the field duration is too long, the dosage is too large or the application is uneven, it will easily cause residual toxicity to the crops of the current season or the subsequent crops.

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