Blended pesticide preparation for controlling weeds in spring rape fields

Abstract

The invention relates to the technical field of agricultural herbicides, in particular to a blended pesticide preparation for controlling weeds in spring rape fields. The blended pesticide preparation for controlling weeds in spring rape fields is prepared from the following effective ingredients of natural plant source auxiliary agents in weight percentage: 8-20% of ethametsulfuron, 65-85% of benazolin and 7-15% of SDP. The invention has the following advantages that (1) the invention overcomes the limitation of ethametsulfuron type herbicides and each single agent of benazolin for killing weeds, the weed killing spectrum and the pesticide effect are greatly increased after blending ethametsulfuron and benazolin, and the pesticide preparation has low toxicity and no pesticide damage on afterreap crops; (2) the pesticide preparation is effective on the grass family and broad-leaved weeds grown out of the spring rape fields, not only can control and eliminate grass weeds such as wild oats and the like, but also can control and eliminate broad-leaved weeds in broad-leaved fields. The pesticide preparation rapidly takes effect after application, one medication can kill the vast majority of weeds, the medication number of times is greatly reduced, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of agricultural herbicides, in particular to a mixed pesticide preparation for preventing weed damage in spring rapeseed fields. [0002] Background technique [0002] Rapeseed is an important oil crop in my country. In recent years, the adjustment of the planting industry structure has led to the rapid development of rapeseed production, and the national planting area is about 6.7 million ha 2 , of which the area of ​​spring rape accounted for 1 / 10 (about 670,000 hm 2 ), rape is mainly distributed in Qinghai, Gansu, Inner Mongolia, Xinjiang, Tibet, Northeast Plain and western Sichuan. Because of its good quality and high oil yield, compared with my country's winter rapeseed production areas, it has obvious regional and seasonal complementary advantages and strong market competitiveness. Rapeseed field weeds are seriously harmful in my country, among which 78.1% are caused by weeds in spring rapeseed fi...

AI Technical Summary

Problems solved by technology

Long-term use of chloralin and herbicides for the control of gramineous weeds in rapeseed fields has resulted in the development of weeds that were originally relatively minor and resistant to pesticides, such as brome, weed, quinoa, lettuce, and dendrobium The occurrence and damage of weeds such as Cyperus chinensis, Weasel petal flower, Selina chinensis, Field bindweed, Persimmon chinensis, Siberian Polygonum, Potentilla velvet and other weeds have increased and become dominant species, making chemical weed control in rapeseed fields more difficult , especially for the effective control of broad-leaved weeds in rapeseed fields, there is still no successful technology

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