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２０％百治虫乳油（有数成分为倍硫磷和灭多成）经室内毒力测定对棉蚜、棉铃虫的共毒系数分别为３１８．９、２Ｏ４．２；田间防治棉蚜、棉铃虫效果良好，它的特点是对大龄（４～５龄）棉铃虫有较强的杀伤力。
20% of the hundred pest control EC (a number of ingredients for the parathion and extermination into) indoor toxicity determination against cotton aphid, cotton bollworm co-toxicity coefficient was 318.9,2 O4.2; field control cotton aphid, cotton bollworm effect Good, it is characterized by the older (4-5 instar) bollworms have strong lethality.