What do you need to pay attention to when weeding rape with chemicals?

What should be paid attention to when chemical weeding is used in rapeseed? Please give guidance to rape chemical weeding, the higher the temperature, the faster the effect. The control effect was the best in the period of vigorous weed growth (before the 4th leaf of 3mura), that is, about 20 days after rape planting. 1. The use of herbicides prohibited by the state is strictly prohibited. Such as Jiahuanglong, Lvhuanglong, aminobenzuron and their compound preparations (such as Maicaojing, etc.). And the use of herbicides without "three certificates" is strictly prohibited. 2. The weeding area is accurate (666 square meters per mu), and the selection of pesticide dosage, application time and control object should be accurate. 3. After sowing, weeding before seedling must be covered with soil before spraying. 4. the drug blending should be uniform, and the spray is not heavy or leaking, so as to avoid drug damage or poor effect. 5. The field with dry soil should be sprayed with water before applying pesticide. 6. Herbicide equipment should be washed with water to avoid drug damage when preventing and controlling diseases and insect pests. During the crop growth period, you can use a fan-shaped angle sprinkler or wear a protective shield to carry out directional low-level spray to prevent liquid medicine from splashing on sensitive crops. Click to get more rape planting techniques click to get more herbicide application techniques click to get more pesticide application techniques