据报道杀虫丁对成螺、幼螺、螺卵及尾蚴均有杀灭作用,具有高效、低毒、低廉等优点[1]。为进一步了解杀虫丁的灭螺效果,我们于1997年7～10月对其进行了室内和现场浸杀灭螺效果观察。1　材料与方法1.1　药物　杀虫丁(杀虫环盐酸盐)由贵州华庆化工有限公司提供,有效含量为48%和90% It has been reported that insecticidal Ding on the spiral, young snails, spiral eggs and cercariae have killing effect, with high efficiency, low toxicity, low cost and other advantages [1]. In order to further understand the snail killing effect of insecticidal Ding, we carried out indoor and on-site immersion and snail control observations from July to October 1997. 1 Materials and methods 1.1 drug insecticidal Ding (insecticidal ring hydrochloride) provided by Guizhou Huaqing Chemical Co., Ltd., the effective content of 48% and 90%