Rice leaf roller is a migratory pest, and adults have a tendency to tender green and phototaxis. There was no significant difference in resistance between varieties (combinations). According to rice leaffolder, it is a characteristic of the moving-in pests and their adult tending to green and light, strengthening the prevention and control of seedlings for 1-2 generations, and suppressing the base number of the insects; properly adjusting the planting period so as to avoid the development of susceptible rice. During the period of high incidence of rice leaffolders; use adulterated insecticidal lamps to trap adult insects. Promote green ecology prevention and control techniques such as raising ducks, raising fish, raising frogs, and using biological pesticides to control rice fields. Technical points: 1. Postponed the planting period appropriately so that the rice susceptibility period avoids the high and high peak period of rice leaf roller. 2. The installation of frequency-type insecticidal lamp to trap adult insects can effectively reduce the generation of the next generation of insects. Use sex traps to trap adult insects to control rice leaf roller, safe, green and environmentally friendly. Promote the physical and ecological control technologies such as ducks and fish farming in rice fields. 3. Strictly control the rice leaf roller in the seedling stage and late growth stage (maize-mature stage), and appropriately relax the control indicators in the middle period. The prevention and control indicators were 40 effective worms at the peak of the 2-3 instar larvae at the time of their tillering, and 20 pods at the seedling and panicle stage. 4. Spray on the leaves of the leafhoppers until the second instar larvae (first leaf stage) or 2 days after the egg hatching peak. 31% fluoxazirazole microemulsion, chlorpyrifos, rice powder, Bacillus thuringiensis (Bt) 8000IU/mg wettable powder 300g/mu can be used for spraying in the incubating period of rice leaffolder; 25% EC chlorpyrifos Triazophos 30 g active ingredient/mu; insecticidal or insecticidal double 75 g active ingredient/mu; profenofos 50 g active ingredient/mu. The control of the 2nd instar larvae can be selected from chlorantraniliprole, avermectin, methotrexate and profenofos. 45-50 kilograms of water were applied to the foot, and fine mist was uniformly sprayed on the upper middle of the rice plant.
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