【摘要】 为明确近几年江苏省二化螟对杀虫剂的抗性水平与变化，采用点滴法测定了2017-2020年江苏省3个地区(溧水、仪征、盱眙)的田间种群对现用主打杀虫剂氯虫苯甲酰胺、杀虫单、阿维菌素及新型杀虫剂氟雷拉纳的抗性。结果表明，各监测地区二化螟的抗药性水平变化趋势一致，对氯虫苯甲酰胺由低水平发展为中等水平(RR为5.83～19.57倍)；对阿维菌素由敏感性下降水平发展为中等水平(RR为3.11～17.05倍)，且抗性水平年增幅较大；对杀虫单由敏感水平发展为低水平(RR为2.37～8.37倍)，但抗性发展缓慢；对氟雷拉纳处于敏感水平(RR为0.65～1.3倍)。江苏省二化螟对3种现用主打杀虫剂均已产生不同程度的抗性，建议合理轮换使用；而氟雷拉纳可作为二化螟防控的备选杀虫剂。更多还原

【Abstract】 In order to clarify the resistance level and changes of rice stem borer Chilo suppressalis to insecticides in Jiangsu Province from 2017 to 2020, the resistance of field populations in three regions of Jiangsu Province(Lishui,Yizheng and Xuyi) to current mainly-used insecticides such as chlorantraniliprole, monosultap, avermectin and new insecticide fluralaner were measured by topical application method. The results showed that the change trend of resistance level of C. suppressalis in each monitoring area was the same. The resistance level of C. suppressalis developed from low level to medium level(RR was 5.83-19.57 folds) to chlorantraniliprole, from sensitivity decreased to a medium level(RR was 3.11-17.05 folds) with fast development to avermectin, from sensitive level to low level(RR was 2.37-8.37 folds) with slow development to monosultap, and was sensitive to fluralaner(RR is 0.65-1.3 folds). These indicated that the C.suppressalis in Jiangsu Province had different resistance level to the three current mainly-used insecticides that should be applied in a reasonable rotation, and fluralaner can be used as an alternative insecticide for the control of C. suppressalis.更多还原