烟酰苯胺是近年广泛使用的杀螺药。当浓度为0.4～1.0ppm时,近期杀螺效果良好。本文研究在低浓度条件下,药物对钉螺生殖能力、螺卵发育的远期作用。 一、材料与方法 配制0.1ppm(1组)、0.05ppm(2组)及0.01%酒精(对照组)。将雌性钉螺300只均分为3组,分别装入纱布袋内并浸入等量(10ml/只)的各组漫液中,12小时后检出投入实验。 Nicotinamide is a widely used molluscicide in recent years. When the concentration of 0.4 ~ 1.0ppm, the recent snail effect is good. In this paper, the long-term effects of drugs on snail reproductive ability and snail egg development under low concentration conditions were studied. First, materials and methods Preparation 0.1ppm (1 group), 0.05ppm (2 groups) and 0.01% alcohol (control group). 300 female snails were divided into three groups, respectively, into the gauze bag and immersed in the same amount (10ml / only) of each group of diffusate, 12 hours after the test was put into the experiment.