辛硫磷防治棉铃虫药效试验

The Effect of phoxim to Control Cotton Bollworn(Heliothi armigera Huber)

１９９５年用４０％辛硫磷乳油进行了防治棉铃虫药效试验，亩用该药５０、７５、１００毫升，在第二遍药后３天均达到７０％以以上防治效果，明显高于２．５％氯氟氰菊酯乳油亩用６０毫升的防效５６．５０％。该药是一种防治抗性棉铃虫的优良杀虫剂，建议棉田用一为亩施７５～８０毫升为宜。

A test to control cotton bollworm with 40% phoxim EC was performed in 1995. The results showed that the control effect of each test was over 70% after 3 days of treatment with 750, 1125, and 1500ml/ha. These control effects were higher than those of 2. 5% cyhalothrin EC 900ml/ha. The insecticide is a good select to control resistant cotton bollworm.