1. The prevention and control of cotton aphid must be aware of the pests, not blindly using drugs, and protecting natural enemies, which is the key to correct control of aphids. 2. The prevention and control of cotton aphid should be based on the home-based agricultural control, protect as much as possible the control of the use of natural enemies, and give priority to the application of comprehensive prevention and control measures coordinated with biological control and chemical control. Insect detection method: Through field sampling at five points, 20 cotton seedlings were continuously inspected at each site for a total of 100 plants. The total caries on the top of each plant and 2-3 leaves were examined and graded. Agricultural control measures In the two-year-old cotton area, intercropping with wheat cotton and rapeseed cotton should be promoted; the wheat cultivars should adopt sorghum (about 20-30 cm) when wheat is harvested, and the length of time that the deceased grows the wheat in the field is sufficient for natural enemies. The transfer. In the one-year-old cotton area, use arrow peas to replace other green manures; plant traps in the cotton fields, specific practices: every 10 rows of cotton and a line of winter cabbage before winter cotton sowing in late March to early April Rapeseed, not individually occupied, was eradicated in late June for feed or green manure. However, attention must be paid to the control of tigers on the ground. Chemical control measures (I) Remedy When a ripe live cotton field is planted in cotton ditching, the pesticide is spread evenly in the cotton ditch, and the cotton seedlings must be guaranteed to pass through the three-leaf period. After transplanting, the transplanted cotton fields can still control the rate of infected plants within 10 days after transplanting. Note: Do not blindly increase the amount of drugs to avoid harm, and at the same time, the pesticides used are highly toxic and must pay attention to safety. (b) Spray When the seedling stage locust damage index reached the control index, it was controlled by pesticide spraying. The medicine types can be selected as follows: 1ã€20% Simendron or Other Chrysanthemum EC 10-20ml/Mu 2. 50% chlorbenazolone 20-30 ml/mu 3, 50% carbaryl wettable powder 30-50 g/mu Choose pharmaceutical 2 should pay attention to changing drug types and cross-medication, water consumption 20-30 kg / acre. With the generation capacity spray, the amount of water available is 10-15 kg. Finger Skateboard,Mini Toy Skateboards,Finger Skateboard Set,Small Toy Skateboard Eastony Industries (NingBo) Co., LTD. , https://www.eastony.com