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近几年来引进和合成了拟除虫菊酯类农药,如敌杀死、速灭杀丁、氯氰菊酯等。这类农药击倒力强,用量少,防治棉花害虫效果好,颇受广大棉农欢迎。但某些地区由于常年单一使用和不合理的滥用,致使局部地区棉蚜虫产生了抗药性,造成用药不保产的局面。且这类农药对棉红蜘蛛防效差,有的地方反映有的农药品种甚至能诱发红蜘蛛增殖;对盲椿象的防效也不理想。而常规杀虫剂如1605、氧化乐果、甲胺磷等有机磷剂毒性大,田间使用中毒事故时有发生,不是理想品种。因而棉花治虫工作急需效果好,毒性较低,残效较长,虫螨兼治的农药品种。试验示范结果表明,新药剂灭扫利符合上述要求。
In recent years, the introduction and synthesis of pyrethroid pesticides, such as enemy kill, speed kill Ding, cypermethrin and so on. Such pesticides knockdown strong, less dosage, good effect of cotton pest control, popular with the majority of cotton farmers welcome. However, in certain areas, cotton aphids have become resistant to insecticides in some areas due to perennial single use and unreasonable abuse, resulting in the situation that medicines are not kept. And these pesticides on cotton spider mites control effect is poor, and some areas reflect some varieties of pesticides even spider red spider proliferation; control of blind stinkbug is not satisfactory. The conventional insecticides such as 1605, omethoate, methamidophos and other organophosphate toxicity, field use of toxic accidents have occurred, not the ideal species. Thus the work of cotton pest control urgently needed effect is good, lower toxicity, long residual effects, insect pest control of pesticide varieties. Experimental demonstration results show that the new chemical agents meet the above requirements.