The prevention and control of cotton aphid should be controlled according to the occurrence of the situation. When the film is taken, it should be treated. Do not spray the medicine in the field to avoid killing the natural enemies. For the field that meets the prevention and control indicators, chemical control should be carried out in time. Generally, 35% of Sai Dan emulsifiable concentrate is 100-160 ml per mu, or 25% of Oxygen Acetate emulsifiable concentrate is 50-100 mg per mu, or special insecticide for mites (5%). Acetam and high-chlorine emulsifiable concentrates 25-30 ml per mu, or 4.5% cypermethrin EC 25-50 ml per mu, and the above agents are alternately sprayed with 50 kg of water per acre to avoid drug resistance. Note the back of the sprayed leaves.
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