【摘要】 桃蚜是辣椒种植中常见的害虫之一，其高效防控技术研发对保障作物安全生产具有重要意义。采用茎叶喷雾法，系统评价了12种杀虫剂单剂及4种混配剂对辣椒桃蚜的田间防效。结果表明，药后3 d, 25%吡蚜酮可湿性粉剂、 70%吡虫啉水分散粒剂、 22%氟啶虫胺腈悬浮剂与70%吡虫啉水分散粒剂混配、 25%吡蚜酮可湿性粉剂与24%螺虫乙酯悬浮剂混配的防效较佳，校正防效依次为91.04%、 92.77%、 93.05%和93.16%;药后7 d, 4个处理的药效分别为94.82%、 94.47%、 95.08%和94.33%, 22%氟啶虫胺腈悬浮剂的校正防效为93.67%,上述5种杀虫剂的防效均显著高于其他处理组。药后7 d,植物源农药0.3%苦参碱水剂、 0.3%印楝素乳油对桃蚜的防效依次为72.95%和75.08%,虽低于化学杀虫剂，但作为生物农药，二者的杀虫效果相对较好。在生产防治中，建议实施分期防控策略，危害初期，使用植物源杀虫剂0.3%苦参碱水剂或0.3%印楝素乳油，中后期交替使用低毒杀虫剂，如25%吡蚜酮可湿性粉剂、 70%吡虫啉水分散粒剂、 22%氟啶虫胺腈悬浮剂或24%螺虫乙酯悬浮剂，或将25%吡蚜酮可湿性粉剂与24%螺虫乙酯悬浮剂混配，22%氟啶虫胺腈悬浮剂与70%吡虫啉水分散粒剂混配使用，这样既可延缓抗药性发展，又能兼顾防治效果与生态安全性。更多还原

【Abstract】 Myzus persicae is a common pest in pepper cultivation, and research on its prevention and control technology is of great significance. In order to screen out the insecticides with better control effect, field efficacy of 12 insecticides as single agent and in 4 mixtures for control of M. persicae were evaluated by stem and leaf spraying method. The results showed that 3 days after the treatment, 25% pymetrozine wettable powder, 70% imidacloprid water-dispersible granules, 22% flonicamid nitrile suspension mixed with 70% imidacloprid water-dispersible granules, 25% pymetrozine wettable powder mixed with 24% spirodiclofenac ethyl ester suspension had better control efficacy, with the corrected efficacy of 91.04%, 92.77%, 93.05% and 93.16%, in the order of corrected efficacy. 7 days after the treatment, he efficacy of four treatments was 94.82%, 94.47%, 95.08% and 94.33%, respectively. In addition, the corrected efficacy of 22% fludioxonil suspension was 93.67%, and the efficacies of the five insecticides were significantly higher than those of other treatments. 7 days after the treatment, the control efficacy of plant source pesticide 0.3% Picrasidine water solution, 0.3% neem emulsion on M. persicae was 72.95% and 75.08%, respectively. Although, their control efficacies lower than that of above chemical insecticides, but as a biopesticide, the effect of two insecticides is relatively good. For control M. persicae in production, it is recommended to implement a phased control strategy, which to control the early stage of M. persicae infestation with plant source insecticide 0.3% Picrasidine aqueous or 0.3% neem emulsion, and in the middle and late stages of infestation, green and low toxicity insecticides are used alternatively, such as 25% pymetrozine wettable powder, 70% imidacloprid water-dispersible granules, 22% fludioxonil suspension or 24% spiroplasmid ethyl ester suspension or mixture of 25% pymetrozine wettable powder and 24% spiroplasmid ethyl ester suspension, or mixing the 25% pymetrozine wettable powder with 24% spiroplasmid ethyl ester suspension, 22% fludioxonil suspension mix with 70% imidacloprid water-dispersible granules. This can not only delay the development of pesticide resistance, but also take into account the control effect and ecological safety.更多还原