自《四川农业科技》1982年第2期报道了花木害虫自粉虱在我省一些地方发现以来,不少读者来信询问防治办法,为此我们选用了一些常用农药进行防效试验,现将初步结果简报如下供参考。一、室内药效试验:对成虫用2.5％溴氰菊酯乳油3,000倍液,25％DDT乳剂300倍液,40％氧化乐果乳剂1,000倍液,50％杀螟松乳剂1,000倍液作常规喷雾,结果证明均有一定触杀作用,特别是溴氰菊酯击倒力强,作用快,药效持久,用药后第5天接虫,4小时内死亡率仍达98％。在不同龄期的若虫上分别 Since “Sichuan Agricultural Science and Technology” No. 2 of 1982 reported that pests of flowers and trees have been found in some places in our province since the occurrence of white pests, many readers have asked for letters about prevention and treatment measures. For this reason, we used some commonly used pesticides for anti-efficacy tests. The results briefings are for reference below. First, the indoor efficacy test: Adults with 2.5% deltamethrin 3,000 times the liquid, 25% DDT emulsion 300 times, 40% omethoate 1,000 times, 50% fenitrothion emulsion 1,000 times as a routine Spray, the results show that there is a certain contact kill, especially deltamethrin strong knockdown, fast action, long lasting efficacy, the first 5 days after receiving the worm, still within 4 hours mortality rate was 98%. In different age nymphs respectively