不同耕作制度下烟粉虱成虫对6种杀虫剂的抗药性比较

The Resistance of Bemisia tabaci to Six Pesticides in Different Cropping System

为明确广州、连州、花都、清远4种不同耕作制度下烟粉虱对6种常用杀虫剂的抗药性水平,指导不同种植模式下烟粉虱有效防控。采用琼脂保湿叶片法测定4个地区烟粉虱成虫对供试药剂的抗药性水平。结果表明广州、连州、花都、清远4个地区烟粉虱对各杀虫剂的抗性水平差异较大,广州地区烟粉虱对吡虫啉、联苯菊酯及氟啶虫胺腈的抗药性处于中、高等抗性水平,花都地区烟粉虱对6种杀虫剂均未产生抗药性,连州地区烟粉虱仅对氟啶虫胺腈产生低水平抗药性,对其他5种杀虫剂敏感,清远地区烟粉虱对吡虫啉产生中等水平抗药性,对其他杀虫剂均处于敏感水平。不同地区种植模式及用药习惯是影响烟粉虱抗药性产生的重要因素。

In order to determine the resistance of Bemisia tabaci to six commonly used pesticides,the experiment was carried out.The results can guide the effective prevention and control of Bemisia tabaci under different planting patterns.The resistance of Bemisia tabaci adults to pesticides was tested using agar moisturizing method.The results showed that the resistance of Bemisia tabaci was significantly different in different places.The resistance of Bemisia tabaci to six pesticides was significant different in Guangzhou,Lianzhou,Huadu and Qingyuan.In Guangzhou,the resistance of Bemisia tabaci to imidacloprid was high.The resistance of Bemisia tabaci to bifenthrin and sulfoxaflor was moderate.It was sensitive of Bemisia tabaci to six pesticides in Huadu.The resistance of Bemisia tabaci to sulfoxaflor was low in Lianzhou.They were sensitive to five other pesticides.Bemisia tabaci in Qingyuan had moderate resistance to imidacloprid and was sensitive to other five pesticides.The different planting patterns and pesticide application habits are the important factors that affect the resistance of Bemisia tabaci.