Post-emergence herbicide, stem-leaf treatment with high selectivity and systemic uptake. Used to control various annual and perennial grass weeds. For annual grasses weeds should be applied at the 3 to 5 leaf stage, and the perennial grasses should be applied after the leaves are separated. Such plantations as soybeans, peanuts, rapeseeds, cotton, flax, tobacco, various broad-leaved vegetables, grapes, oranges, apples, etc., can be applied in the second leaf to tillering stage of grass weeds. It is used to control annual weeds such as barnyardgrass, wild oats, green foxtail, crabgrass, goosegrass, aphrodisiac, coriander, millet, etc., and appropriately increase the dosage to control perennial weeds such as imperata, arabian sorghum and bermudagrass And some highly resistant annual grass weeds. For soybean field weeding with 24% EC 408 ~ 600mL/hm2, spray on water stems and leaves. If medication is not applied during the best application period, increase the number of applications or increase the amount of medication. Selective herbicides control annual and perennial grass weeds.