灭净菊酯是我国上海中西药厂新生产的一种拟除虫菊酯杀虫剂,1985年我们受该厂的委托,进行20％灭净菊酯二万倍(10ppm)防治柑桔潜叶蛾(Phyllocnistis Citrella Sta)的小区试验,初步看出灭净菊酯和相同浓度的杀灭菊酯(S5206)防治的药效差异不大,它对杀伤潜叶蛾幼虫、卵和喷药后拒避成娥产卵都有极好的效果。1986年我们进一步在全省各地柑桔产区进行大面积示范试验,药效与小区试验结果基本一致,现将两年材料整理如后。一 1985年小区试验 (一) 试验方法 1.对幼虫的杀伤试验:7月16日在本所 Cypermethrin is a new pyrethroid insecticide newly produced by Chinese and Western pharmaceutical companies in Shanghai. In 1985, we commissioned the plant to carry out 20% (Phyllocnistis Citrella Sta) community trial showed that there is no significant difference in efficacy between control group and insecticide (S5206). It is effective in killing the leaf moth larvae, egg and spraying E-spawning have excellent results. In 1986, we further conducted large-scale demonstration experiments in citrus producing areas throughout the province. The results of the experiments were basically consistent with those of the plot test. A 1985 Community Test (A) Test Method 1. Killing test on larvae: July 16 in the Institute