为探明9%12α-羟基鱼藤酮水乳剂对水稻纵卷叶螟、白背飞虱和褐飞虱的防治效果,进行了田间药效试验。结果表明:9%12α-羟基鱼藤酮水乳剂对上述3种害虫均有较好的防效。用药量为80~100 mL/667m2时,可有效防治稻纵卷叶螟低龄幼虫,具有防效较高和持效期较长的特点;用药量为100~120 mL/667m2时,可高效杀灭田间白背飞虱和褐飞虱,具有较好的速效性。因此,该药剂可推荐用于防治水稻纵卷叶螟、白背飞虱和褐飞虱。 In order to find out the control effect of 9% 12α-hydroxyl rotenone aqueous emulsion on rice leaf roller, white-backed planthopper and brown planthopper, a field efficacy test was conducted. The results showed that: 9% 12α-hydroxy rotenone water emulsion on the three kinds of pests have good control effect. When the dosage was 80 ~ 100 mL / 667m2, it could effectively control the young larva of Cnaphalocrocis medinalis, and had the characteristics of high control effect and long lasting period. When the dosage was 100 ~ 120 mL / 667m2, Off the field of white-backed planthopper and brown planthopper, has good fast-acting. Therefore, the agent may be recommended for controlling the rice leaf roller, white-backed planthopper and brown planthopper.