Herbicidal composition containing rimsulfuron and 2,4-dichlorphenoxyacetic-acid and application thereof

Abstract

The invention discloses a herbicidal composition containing rimsulfuron and 2,4-dichlorphenoxyacetic-acid and application thereof. The rimsulfuron and the 2,4-dichlorphenoxyacetic acid serve as main active ingredients; and the mass ratio of the rimsulfuron to the 2,4-dichlorphenoxyacetic acid is 1-80:1-80. The herbicidal composition can be used for preparing herbicides for controlling postemergence weeds in corn fields. Compared with single-component herbicide, the herbicidal composition delays weed resistance, has broad herbicidal spectrum and acts for a long time on the premise of improvinga herbicide effect, is safe for corns and afterculture crops, and particularly has an obvious effect of controlling various gramineous weeds and broadleaf weeds in the corn fields.

Description

technical field [0001] The invention belongs to the technical field of pesticides, especially the field of herbicides, and relates to a binary compound of rimsulfuron-methyl and 2,4-dichlorophenoxyacetic acid. The herbicide composition can be applied to post-emergence weeding in corn fields. 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,...

AI Technical Summary

Problems solved by technology

The mechanism of action of this product is a hormone-type herbicide, which has a poisonous effect at high concentrations, prompting weed stem tissues to increase nucleic acid and protein synthesis, restore the division ability of mature cells, and promote cell division, resulting in abnormal growth and leading to weeds Death, weed poisoning symptoms are similar to the symptoms of auxin substances, and are widely used in rice, corn, wheat, barley, oats, pasture, sorghum, sugarcane and other gramineous crops to control annual and perennial broad-leaved weeds. Grass, but it is ineffective against grass weeds, the weeding spectrum is not wide enough, and its use is limited

[0010] 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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