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河北省邯郸市每年种植夏玉米面积在400万亩以上,近年来,由于阿特拉津除草剂使用日久,导致玉米田杂草种群结构发生变化,一次性芽前除草剂在许多地区已难以达到理想的除草效果且有残留,毒化土壤。寻找替代除草剂已成为农民的迫切要求,为此,我们在邯郸县、曲周县和大名县进行了克无踪防除夏玉米田杂草的试验示范推广,获得了较好的杜会和经济效益。1 原理、特点及效益1.1 原理。克无踪属触杀型灭生性除草剂,它通过参与杂草细胞内光合作用和电子传递系统的活动,从还原态迅速氧化成游离态,同是产生过氧化氢等有毒物质破坏细胞膜和细胞质,导致杂草失水萎蔫直至枯死。1.2 特性。一是速度快,一般用药2小时后杂草中毒
Handan City, Hebei Province, annual planting of summer corn area of 400 mu or more, in recent years, due to the use of atrazine herbicide for a long time, resulting in corn field weed population structure changes, one-time pre-emergence herbicide has been difficult in many areas Achieve the desired effect of weeding and residue, poisoning the soil. Looking for alternative herbicides has become an urgent demand of peasants. Therefore, we carried out experimental demonstration and popularization of weeds in summer corn fields without any trace in Handan County, Quzhou County and Daming County, and obtained good social and economic benefits benefit. 1 principle, characteristics and benefits 1.1 principle. Gram-no-touch is a kind of extinct herbicide that rapidly oxidizes from a reduced state to a free state by participating in weed intracellular photosynthesis and electron transfer system activity, and also produces toxic substances such as hydrogen peroxide to destroy the cell membrane and the cytoplasm, resulting in Weeds wither wilt until dead. 1.2 Features. First, speed, general weed poisoning after 2 hours of treatment