In recent years, due to changes in planting structure, the area of ​​dryland crops in China has rapidly expanded, and the use of herbicides such as acetochlor in corn, peanuts, tomatoes, and green beans has become increasingly common. Some farmers in the process of use due to improper methods caused by poor weeding effect, and even produce continuous harm. When weeding with acetochlor herbicide in drylands, we should pay attention to the following four points: Site preparation quality. The quality of soil preparation is directly related to the efficacy of acetochlor. The quality of site preparation is not good, and the old grass is not eradicated, which directly affects the effect of weed control because acetochlor can only be absorbed by young shoots and young roots of weeds. It has no control effect on the weeds that have been formed; the soil is uneven, and the liquid medicine cannot be evenly distributed. Spraying, affect the weeding effect. Medication time. Acetochlor is a selective pre-emergence herbicide. It can only be used before the weeds are unearthed after sowing of the crop to produce its medicinal effect, and the earlier it is used, the better, but it is basically unprotected against unearthed weeds. effect. Soil moisture. The effect of acetochlor on weeds is mainly through the absorption of young shoots and young roots of weeds, inhibiting the growth of young shoots and young roots, stimulating the roots to produce a necrotic deformity, and leading to the death of weeds. A certain degree of soil moisture will help improve the weeding effect. If persistent dry weather is encountered during the medication phase, weeding effects will be greatly reduced. Therefore, watering the soil to increase soil moisture and then using drugs is one of the key measures to improve the efficacy of acetochlor. Phytotoxicity problem. Acetochlor herbicides are prohibited on sensitive crops such as cucumbers, rice, spinach, wheat, leeks, and sorghum. The use per acre in tomato, corn, soybeans, vegetables, and rapeseeds should be limited to 50-75 ml, otherwise It is prone to injury. Shenzhen Sunson Tech Co., Ltd , https://www.sunsonkiosk.com