1. phenoxy fatty acid herbicide, selective systemic conductive stem and leaf treatment agent. Pesticides are highly selective between gramineous weeds and dicotyledonous crops. Stems and leaves can absorb pesticides within a few hours, and annual weeds can spread to the whole plant within 24 hours. It is suitable for controlling monocotyledonous weeds in cotton, soybean, rape, peanut, flax, apple, grape, beet and various broad-leaved vegetable crops. When the dosage is increased, it also has an effect on perennial weeds such as Bermuda grass, white grass and reed. For example, to control gramineous weeds in cotton fields, apply the pesticide at the 3-5 leaf stage, and spray 100 m2 EC 7.5- 10.5ml/ 100 m2 on the leaves; To control the annual gramineous weeds in soybean field, apply the pesticide at the stage of 3-5 leaves, and evenly spray 6-7.5 kg with10% EC 9-15 ml/100 m2; To control weeds in rape field, apply the pesticide when the weeds are in full bloom, in the middle of a leaf or with leaves, using 5.3 ~ 7.5 ml/10% EC; Use 10% EC 20 ~ 30ml/100m2 to control gramineous weeds on the shovel during the 4 ~ 6 leaf stage. In the mixed field of weeds in single and Shuang Ye, it can be used in combination with herbicides (tribenuron, huwei, broadleaf blight, burning grass, etc.). ) It can also be mixed with 10% EC 7.5mL/ 100m2 and 45% broadleaf withered EC or 48% bentazon solution 20mL. 2. Herbicide after germination in dry land is suitable for controlling gramineous weeds in broad-leaved crop fields such as soybean, peanut, cotton, potato, mung bean, watermelon and rape.