40％氧化乐果乳剂,是一种防治抗性蚜螨比较好的国产新农药。据1981年在本院南湖农场试验,以1,000—2,000倍液喷雾,施药后3天和7天,防治棉蚜的效果分别为94.6—100％和87.3—96.3％,而1605的2,000倍液防效分别为85.2％和80.4％; 40% Omethoate Emulsion, is a kind of new pesticide which is better to control the resistant aphid mites. According to a 1981 South Lake Farm test in our hospital, 1,000 to 2,000 times of liquid spraying, 3 days and 7 days after spraying, the control effect of cotton aphid were 94.6-100% and 87.3-96.3%, respectively, while that of 1605 was 2,000 times Control effects were 85.2% and 80.4% respectively;