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测定了溴氰菊酯、氯氰菊酯、氧化乐果、马拉硫磷、甲基对硫磷、久效磷、灭多威、吡虫啉、烟碱等 9种杀虫剂对北疆棉蚜的毒力 ,并与 1988年的测定结果比较表明 ,北疆棉蚜对各类药剂的抗性均有不同程度的上升。对有机磷类杀虫剂抗性发展较为缓慢 ,抗性倍数为 0 .3～ 6 .8,处于敏感和低抗水平 ;对溴氰菊酯处于高抗水平 ,抗性倍数达 118.2 ;对氯氰菊酯处于低抗水平 ;对灭多威的抗性发展较快 ,抗性倍数上升至 15 .9。在供试药剂中吡虫啉的毒力最高 (L D5 0 =0 .2 7ng·头 - 1 )。
The toxicities of 9 insecticides, including deltamethrin, cypermethrin, omethoate, malathion, methyl parathion, monocrotophos, methomyl, imidacloprid and nicotine, , And compared with the results of 1988, the results showed that the resistance of cotton aphid in northern Xinjiang to various types of medicaments all increased to some extent. The development of resistance to organophosphate insecticides was relatively slow, with a resistance multiple of 0.3-6.8, sensitive and low resistant level, high resistance level to deltamethrin of 118.2, resistance to cypermethrin At a low level of resistance; resistance to methomyl rapid development, resistance fold increased to 15.9. The highest virulence of imidacloprid was in the test drug (L D5 0 = 0.27 ng · head-1).