虫酰肼·毒死蜱防治十字花科蔬菜斜纹夜蛾效果试验

The Tebufenozide·chlorpyrifos' controlling effect experiment on Brassicaceae vegetable Spodoptera litura

用20%虫酰肼·毒死蜱乳油防治十字花科蔬菜斜纹夜蛾,以24%虫酰肼乳油与48%毒死蜱乳油为对照,试验结果表明:20%虫酰肼.毒死蜱乳油110ml/667m2、120ml/667m2对斜纹夜蛾的防治效果比对照药剂24%虫酰肼乳油30ml/667m2和48%毒死蜱乳油150ml/667m2的防治效果好,差异极显著。该药持效期在7d以上,对甘蓝菜安全。建议生产上在斜纹夜蛾幼虫盛发期使用,使用浓度110ml/667m2～120ml/667m2。

To use 20% Tebufenozide＇chlorpyrifos for controlling Spodoptera litura with 24% Tebufenozide and 48% chlorpyrifos as comparison treatment. The results show that the compound pesticide applications of 110ml/667m2 and 120ml/667m2 have a better effect than the comparison treatments, whieh＇s difference is extra obvious. The pesticide effect period lasts for over 7d and it is safe to Brassiea oleraeea L. It is suggested that the pesticide to be applied in Spodoptera litura＇s larva huge occurrence stage and the application consistence is 110ml/667m2- 120ml/667m2.