Post-emergence herbicide composition applied to corns

Abstract

The invention provides a post-emergence herbicide composition applied to corns. The herbicide composition comprises the following active components: topramezone, propisochlor and atrazine, wherein the weight ratio of topramezone to propisochlor to atrazine is (0.1-10) to (10-35) to (10-35). Compared with prior art, the herbicide composition is capable of preventing and removing gramineous weeds, broadleaf weeds and cyperus rotundus, is safe to the corns, does not influence afterreap crops, and has a good application prospect; when the use amount of the herbicide composition is 80ml per mu, the control effect of the weeds reaches over 75.3% after 10 days and reaches over 90.5% after 30 days; the control effect is obviously improved along with the increase of the use amount of the herbicide composition; the weeds in the whole growth period can be controlled by applying the herbicide for one time; the herbicide composition has remarkable effect of weeding, is environmentally friendly and does not influence the afterreap crops.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a corn post-emergence herbicide composition containing active components of fenflutrazone, promethachlor and atrazine. technical background [0002] Corn is not only an important food crop in my country, but also an important feed crop. In recent years, with the development of industries such as animal husbandry, food processing, wine making and biodiesel, the market demand for corn has continued to increase. In 2012, my country's corn planting area reached 39.949 million hectares, second only to rice, becoming the second largest planting crop, and there is still an increasing trend. However, weeds in corn fields are common and of various types. In Huanghuaihai summer corn weeds are serious. The area of ​​weeds accounts for 82% to 96% of the planting area in this area, and the area of ​​moderate damage is 64 to 66%. Maize seedlings are most seriously damaged by weeds, and we...

AI Technical Summary

Problems solved by technology

Oxentrazone has good mixed compatibility with atrazine, etc., but since atrazine lasts for 2-3 months and is harmful to subsequent sensitive crops such as wheat, soybean, rice, etc., if atrazine Excessive dosage of dehydration will cause residual phytotoxicity to the next crops, and if the dosage is too small, no synergistic effect will be achieved

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