杀螟松是对人、畜比较低毒、安全,对害虫比较速效、高效的一种化学新农药,适用于喷杀茶叶害虫。目前常见的工业产品50％杀螟松乳剂,一般在1000至1500倍水稀释液的常用浓度下,喷后十天可以采制茶叶。为探明杀螟松在我省地区气候环境下杀除茶叶害虫的药效情况,今年二、三月间先后购备上海农药厂50％乳剂1市斤瓶装产品(系在上海购取,以下简称“沪产杀螟松”),及进口的日本住友化学工业株式会社50％乳剂20公斤罐装产品(系在福安购取,以下简称“日产杀螟松”),从四月间开始,陆续在用时加清水配成稀释液,进行以下试验: Fenitrothion is human, livestock less toxic, safe, more effective on pests, a new chemical pesticides, suitable for killing pests of tea. The current common industrial products 50% fenitrothion emulsion, usually 1,000 to 1,500 times the dilution of water in the common concentrations, spray can be made after ten days of tea. To ascertain the efficacy of fenitrothion to kill tea pests in the climatic environment of our province, we purchased 50% emulsion 1 jin bottled products from Shanghai Pesticide Factory in February and March this year Referred to as “Shanghai fenitrothion”), and imported Sumitomo Chemical Co., Ltd. 50% emulsion 20 kg canned products (Department purchased in Fu’an, hereinafter referred to as “fenitrothion”), from April onwards, One after another in the use of water plus diluted solution, the following test: