Herbicidal composition containing diflufenzopyr and atrazine and application thereof

Abstract

The invention belongs to the field of pesticides, and discloses a herbicidal composition containing diflufenzopyr and atrazine and application thereof. The diflufenzopyr and the atrazine serve as main active ingredients; the diflufenzopyr and the atrazine account for 10 to 85 percent of the total mass of the herbicidal composition; and the mass ratio of the diflufenzopyr to the atrazine is 1-65:1-70. The herbicidal composition provided by the invention can be applied to preparation of herbicides for controlling post-emergence weeds in a corn field, and particularly has an obvious effect when used for preparing herbicides for controlling various gramineous and broadleaf weeds in the corn field. Compared with a single-component herbicide, the herbicidal composition reduces dosage, delays resistance of weeds, has broad herbicidal spectrum and acts for a long time on the premise of improving 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 diflufenzofen and atrazine 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 country;...

AI Technical Summary

Problems solved by technology

It is easy to be washed by rainwater to the deep layer of the soil, and it is also effective on some deep-rooted grasses, but it is easy to cause phytotoxicity, and the dosage should not be too large, and atrazine only has an inhibitory effect on perennial weeds, so its weeding spectrum is narrow , In addition, due to the long-term use of atrazine in corn fields, many weeds have developed resistance to it

[0006] At present, herbicides in cornfields are limited by the safety of crops, and their herbicidal spectrum is also limited. Using a single herbicide alone cannot completely and effectively control the occurrence of weeds in cornfields. Too long effective period, excessive dosage or uneven application will easily cause residual toxicity to current crops or subsequent crops

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