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棉蚜是我国北方棉区的主要害虫。棉蚜年发生世代多 ,发生量大 ,危害重 ,导致生产上用药次数多 ,用药量大 ,使棉蚜对常用农药产生抗药性 ,防治效果逐年下降。为筛选出防治效果较好的药剂 ,于2 0 0 0年在清丰县进行了 1 0 %一遍净防治棉蚜药效试验 ,旨在为大田防治用药提供依据。
Aphis gossypii is a major pest in northern cotton area in China. Cotton aphid occurred more than one generation, the occurrence of large, endangering heavy, resulting in the production of drugs on the number of large dosage, so that cotton aphid drug resistance to commonly used pesticides, prevention and control effect decreased year by year. In order to screen out the best controlling agents, we conducted a 10% net efficacy test on cotton aphid in Qingfeng County in 2000 to provide the basis for field control.