I. Agricultural control
1. Properly match early, middle and late-maturing varieties of rice, timely transplanting seedlings, and rational management, so that the aphid's emergence period is staggered with the rice's tillering and booting stages.
2. Eliminate surrounding weeds during winter and spring to eliminate overwintering larvae and pupae and eliminate alfalfa weeds and field side weeds before hatching eggs.
3, the spring plowing production season, timely plowing field blocks, in order to eliminate overwintering larvae, reduce the number of pests.
Second, physical control
Light traps adult worms and uses the phototaxis of rice borer worms to trap and kill.
Third, chemical control
According to the Daqi, the different characteristics of the Huaihua and Sanhuayu occur, and different agents are used for prevention and treatment.
1. Daxue: When the symptoms of dry seedlings are found during the seedling stage, the pesticide should be sprayed and controlled in time. The pesticide can use 18% of insecticidal water-repellent agent, 200 ml/mu, 50 kg of total water spray, spray once every 5-7 days. . Rice jointing period 40% imidacloprid 100 g/mu, watering 50 kg spray.
2. Prevention and control of Scutellariae difficile: when the stem borer is found to be harmful to the seedlings, it can be used to prevent and cure seedlings with 25% of insecticidal double 100-150 grams and watered with 50 kilograms of spray; 100-150 grams of Dimethoate emulsified with 50 kg of water, has a good effect of killing eggs.
3. Prevention and treatment of S. japonicum: In the peak period of egg hatching and in the heading period of break, spray with 5% fipronil 15 ml/mu watered 50 kg can effectively prevent dead heart seedlings and white panicles.
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