Herbicide injury prevention: see growth of the seedlings, grass conditions, weather, soil. Or thin seedlings to take root not easy administration: depending on the type of medication weeds and growth; the upper limit of the temperature is low application rates in medication; high dosage of heavy clay soil some 50% Jin Yutian treasure suspensions, sandy These soil less medication; the soil is dry without medication. Improve herbicide effect: herbicide temperature to 20 ~ 35 ℃ is appropriate, the use of air humidity on the efficacy of the herbicide also obvious impact stems of herbicides applied at air humidity is relatively large, 50 percent of Zhejiang Jin Yutian Bao suspensions, herbicide extended residence time in the foliage of the weeds, Luoyang 50% Jin Yutian treasure suspension helps weed leaf stomata open to absorb a large number of herbicides, the purpose to improve the herbicidal effect .