敌百虫也是一种有机磷杀虫剂,它对棉蚜的药效不很高,如果直接用来防治棉蚜,效果不大,而且可能发生药害。 敌百虫加碱面后,能产生敌敌畏,敌敌畏对棉蚜的防治效果比敌百虫要大,因此,敌百虫加碱后,能提高治蚜效果。这样,如何能使敌百虫加减后产生较多的敌敌畏,是配制好“敌百虫加碱”的关键。 从去年开始,各地已试用“敌百虫加碱”来防治棉 Trichlorfon is also an organophosphorus insecticide, its efficacy on cotton aphids is not very high, if used directly to control cotton aphid, little effect, and may occur phytotoxicity. Trichlorfon plus alkali surface, can produce dichlorvos, dichlorvos against cotton aphid control effect than trichlorfon to larger, therefore, trichlorfon alkali, can improve the effect of aphids. In this way, how to make trichlorfon add or subtract produce more dichlorvos, is the preparation of a good “trichlorfon plus alkali” key. From last year, all over the country has tried “trichlorfon plus alkali” to control cotton