论文部分内容阅读
在新的有机磷杀虫剂中,毒死蜱(Dursban)和毒死蜱的甲基同系物Dowco 214(O, O dimethyl O-3,5,6-trichloro-2-pyridyl phosphorothioate)经许多地区实验室和现场研究证实,对蚊类幼虫,特别是污水中的幼虫有显著效果,对伊蚊、按蚊和库蚊的成虫与幼虫以及曼蚊幼虫均有效。为了观察这两种药物在稻田内防制蚊类幼虫的效果,作者于1975年5～6月间在马来西亚槟榔屿某地区的二片稻田用毒死蜱和Dowco 214乳剂进行喷洒,观察杀灭蚊幼虫的效果。第1片稻
Among the new organophosphorus insecticides, the methyl homologs of Dursban and Chlorpyrifos, Dowco 214 (O, O, O, O, O, O) Studies have shown that it has significant effects on larvae of mosquito larvae, especially in sewage, and is effective against adult and larvae of Aedes albopictus and Culex pipiens and against Muscovy malaria larvae. In order to observe the efficacy of these two drugs against mosquito larvae in paddy fields, the authors sprayed chlorpyrifos and Dowco-214 emulsions on two paddy fields in Penang, Malaysia from May to June 1975 to observe the effects of mosquito larvae effect. The first piece of rice