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增效剂与杀虫剂混用是害虫抗药性治理的有效方法.在对柞蚕饰腹寄蝇的抗药性治理研究中,采用不同增效剂与防治药剂灭蚕蝇一号复配使用,筛选出增效作用显著的增效剂增效灵(O,O-二乙基-O-苯基硫代磷酸酯).对增效灵与灭蚕蝇一号混配液中2种成分的使用浓度进行优化试验,结果表明:分别在50％～60％的柞蚕幼虫4眠眠起及移到窝茧场时,将混配药液(混配液中增效灵与灭蚕蝇的质量浓度分别为1.00、2.00 g/L或同为1.00、1.50、2.00 g/L)喷施柞树叶片后给柞蚕幼虫添食,对柞蚕饰腹寄蝇的校正防治效率分别达到93.47％、90.85％、95.82％、98.09％,与单一使用灭蚕蝇一号的校正防治效率差异极显著(P＜0.01),而且灭蚕蝇一号与增效灵按照上述配比混配使用对柞蚕的产茧性能和繁育性能均无不良影响.为了减少杀虫剂使用剂量,降低柞蚕生产成本和延缓柞蚕饰腹寄蝇抗药性的发展,建议生产中将灭蚕蝇一号与增效灵混配后质量浓度同为1.50 g/L的药液用于防治柞蚕饰腹寄蝇.“,”Mixed application of synergist and insecticide is one of the effective tactics for pest resistance management.In the research of resistance management for Blepharipa tibialis (Chao),various synergists were used to mix with insecticide Miecanying-1.One of the synergists,named O,O-diethyl-O-penyl thiophosphate (DEPT),was found to be the best synergist for mixed use with Miecanying-1.The optimization on mixture ratio and drug application concentration indicated that the corrected control effect of DEPT and Miecanying-1 mixed at different ratios (mass concentration of both agents after mixing was 1.00,2.00 g/L respectively or mass concentration of both agents was 1.00,1.50 and 2.00 g/L) to tussah silkworm larvae 50％-60％ of which had finished the 4th molting or at spinning stage achieved 93.47％,90.85％,95.82％ and 98.09％ respectively,which showed extremely significant difference (P＜0.01) compared to that of single application of miecanying-1.In addition,mixed application of DEPT and Miecanying-1 showed no unfavorable effect to cocoon quality and reproductive performance.To decrease the amount of insecticide usage,lower the cost of cocoon production and retard the development drug-resistance in the pest,we hereby suggest control of Blepharipa tibialis (Chao) using mixture of DEPT and Miecanying-1 both with mass concentration of 1.50 g/L.