Herbicide injury prevention: detoxification. When medication maximum hundred ridge pass, should immediately drain field irrigation water, flush several times with new irrigation and facilities into the lime and acid herbicides. If the herbicide on the plants for a long time, the available irrigation equipment water rinse, reduce poison stick to the leaves. When the injury occurred partial plots, the first turn on the water wash, work, Zhejiang 100 Ridge pass, after fill the gaps, Zhoukou hundred ridge through, soared facilities available fertilizer. Herbicide Category: herbicide classification according to the movement in plants. Tag type herbicides: contact with the weeds when the agent, and the agent only kill some contact, Xinxiang hundred ridge pass, play locally killing effect plants not conduct. Only kill weeds aboveground, underground or partially underground stem weeds deep-rooted perennial weeds, the effect is poor.