试验表明 ,2 5%毒死蜱·氯氰乳油对棉铃虫卵和幼虫具有较好的防治效果 ,药后 7d防效 85.56% ,明显优于单剂对照 4 0 %毒死蜱乳油 ( 76.0 7% )和 5%氯氰菊酯乳油 ( 70 .0 1% )的防效 ,可以替代这两种药剂在生产中应用 The results showed that 25% chlorpyrifos-cyanogen EC had good control effect on the eggs and larvae of H. armigera. The control effect was 85.56% on the 7th day after treatment, which was significantly better than that of 40% chlorpyrifos (76.0 7%) and 5 % Cypermethrin EC (70.0%) of the control effect, can replace the two agents in the production of applications