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20 0 0 - 2 0 0 1年进行了利用病毒制剂“棉烟灵”防治烟青虫、斜纹夜蛾和烟蚜研究。结果表明 ,“棉烟灵”对烟青虫有较好防效 ,对斜纹夜蛾无效。“棉烟灵”加辛硫磷的混剂对烟蚜有兼治作用。“棉烟灵”在田间的持效达 36d左右 ,药效呈线性递减 ,每天递减率为 3.14 % ,防效与烟青虫幼虫密度无关。依靠烟青虫幼虫的移动来实现病毒的扩散范围有限 ,幼虫感染病毒后的第 5d达到死亡高峰。
Studies on the prevention and control of tobacco budworm, Spodoptera litura and Myzus persicae using the virus preparation “Morainot” were conducted in 2000-2001. The results showed that “Cotton Ling” had good control effect on tobacco budworm and was not effective against Spodoptera litura. The combination of “cotton spirit” and phoxim has the effect of treating aphids. The effectiveness of “Cotton Spirit” in the field reached about 36 days, and its efficacy decreased linearly with a daily rate of 3.14%. The control effect was independent of the larval density of tobacco budworm. Relying on the movement of tobacco budworm larvae to achieve a limited spread of the virus larvae infected with the virus reached the peak of death 5d.