40%氯虫苯甲酰胺·噻虫嗪水分散粒剂防治二化螟田间药效试验

The Field Trial of 40% of Chlorantraniliprole and Thiamethoxam against Chilo suppressalis(Walker)

通过田间试验研究不同药剂对二化螟防治效果、产量及用药成本的影响。结果表明,40%氯虫苯甲酰胺·噻虫嗪水分散粒剂10 g/667m2防治晚稻二化螟的效果明显高于常规用药15%阿维·三唑磷乳油100 mL/667m2,且40%氯虫苯甲酰胺·噻虫嗪水分散粒剂10 g/667m2能起到保护生态环境,减少农药用量、降低农药残留的作用。施药方法:于第3代二化螟卵孵盛期至2龄高峰前施药,可提高防效4.98%,每667 m2减少施药工本6元,增加产量31 kg,减少用药成本11元,667 m2增加总效益79.4元。

Effects of different pesticides on controlling rice stem borer,Chilo suppressalis（Walker）,yield and the cost of pesticide uses through out the field experiments.The results showed that,40% of chlorantraniliprole and thiamethoxam WDG（medication regimen A） with 10 g/667m 2 for controlling rice stem borer was obviously better than that of 15% AVI/three Triazophos EC 100ml/667m 2 which was one of the conventional insecticides, Chlorantraniliprole and thiamethoxam WDG with 10 g/667m 2 sprayed at the peak period of the egg hatching to the second instars in the third generation of rice stem borer,could improve the control efficiency by 4.98%,the labour for insecticide spraying could reduce by 6 yuan（RMB）,the yield could increase by 31 kg,insecticide costs would reduce by 11 yuan.And the total benefits would increase by 79.4 yuan per 667 m 2.This chemical can be served to protect the ecological environment,reduce pesticide use,and decreased pesticide residues.