黑尾叶蝉Nephotettix cincticeps Uhler是稻区重要害虫,对它寻找有效的防治措施是当务之急。喷洒药剂抑制害虫繁殖是综合防治中一个重要环节。黑尾叶蝉对1605有自然抗性。马拉松防治效果虽好,但我省供应量尚不能满足实际需要,长期使用也可能引起抗性(尾崎幸三郎等,1965、1967;Kojina等,1963;Toskikezu,1972)。有机磷杀虫剂“甲胺磷”[O,S-二甲基-胺基硫代磷酸酯,下文中简称“T”]经二、三年全国药效试验证实它防治黑色叶蝉有显著效果。我校自1972年开始用化学测定方法和同位素示踪法研究它在田间的残留动态。现将化学测定二年来的研究结果总结如下。 “甲胺磷”超微量化学测定技术已有介绍(Backman et al.,1969)。我们曾用附有氢 Nephotettix cincticeps Uhler is an important pest in the rice area. It is imperative to find effective prevention and control measures for it. Spraying agents to inhibit pest reproduction is an important part of integrated control. Black-tailed leafhopper 1605 have natural resistance. Marathon control effect is good, but our supply can not meet the actual needs, long-term use may also cause resistance (Ozaki Ozaki, 1965,1967; Kojina et al., 1963; Toskikezu, 1972). Organophosphorus pesticide “methamidophos” [O, S-dimethyl-aminothiophosphate, hereinafter referred to as “T”] after two or three years of national efficacy tests confirmed that it is significant prevention and control of black leafhopper effect. My school since 1972 with chemical determination and isotope tracer method to study its residual activity in the field. Now two years of chemical determination of the results are summarized as follows. Methamidophos ultramicro-chemical assays have been described (Backman et al., 1969). We used to have hydrogen attached