1. Sowing and Seedling Integrated Management Techniques of Cotton in Cotton Seedlings . Including rational rotation, clean gardens, planting and trapping crops; selection of high-quality disease-resistant varieties, such as Yukang 911, Chunxuzao, Zhongzhi 372, Zhongmian 12 and other resistant varieties, resistant to Helicoverpa armigera transgenic Bt gene Cotton varieties should also be further expanded; pesticides should be used to treat seeds, prevent seedling mites, yellow wilt disease, anthrax, blight, etc.; timely sowing, improve the quality of sowing, and strengthen field management; rational use of chemical pesticides. 2. Comprehensive prevention and control techniques for major diseases and pests in middle and late cotton. It mainly includes: (1) Agricultural control. Strengthen water and fertilizer management, make plants grow robustly, increase resistance to pests and diseases; pruning, snoring, artificial ovulation, and catching old larvae; remove old leaves and empty branches in time to facilitate ventilation and light transmission to reduce disease epidemics. (2) Physical control. The use of high-pressure mercury lamps, frequency-vibration insecticidal lamps, cotton bollworm sex attractants, and poplar branches to trap adult insects such as cotton bollworm can reduce the amount of eggs laid in the field and significantly reduce damage to the bollworm. (3) Vigorously promote biological control, protect and control the use of natural natural enemies in the control of harmful effects. (4) Rational use of chemical pesticides. Chemical control of pests in the middle and later stages of cotton should be strictly in accordance with pest control indicators, promote the use of targeted application methods, try to postpone the spraying of large areas as much as possible, in the use of drugs should pay attention to different mechanisms of pesticide replacement, rotation, to delay the pest The emergence and development of drug resistance. Strengthen the field forecast, timely and early prevention and control of cotton bollworm, Fuxi, leafhopper, red bollworm, and verticillium wilt.
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