Herbicide Classification: selective herbicide. Herbicide selectivity between different plants that can poison or kill weeds without harming the crop, a hundred ridge pass, or even just kill some weeds without harming the crop and other weeds, Luoyang hundred Ridge pass, Where a selective herbicide having such effect known as selective herbicides. Herbicide injury prevention: if serious poisoning plots, plots should be exposure, after leaching deep plowing, no effect after planting, Zhejiang 100 Ridge pass, otherwise then washed irrigation. Or grow a small amount of sensitive crops, observed 10-15 days. Strengthen field management. When light injury, promptly topping or removal of affected parts Adding fertilizer available and reasonable irrigation; serious, tilling the land, replanting or replant.