Abstract: Objective Objective To investigate the molluscicidal effect of 5% niclosamide ethanolamine granules against Oncomela? nia hupensis in a marshland field. Methods Methods The 5% niclosamide ethanolamine granules were sprayed at a dose of 40 g/m2 on 3 snail?breeding marshlands in Yangzhong City of Jiangsu Province to assess its field molluscicidal actions，while 26% suspension concentrate of metaldehyde and niclosamide（MNSC)；at a dose of 4 g/m2 ）and fresh water served as controls. Results Results After seven days spraying, 5% niclosamide ethanolamine granules resulted in a of snail mortal85.42%ity，while the mortality rates of snails were 82.35% and 2.86% in the MNSC and water control groups，respectively. Conclusion Conclusion 5% niclosamide ethanol? amine granules exhibit a high molluscicidal activity，which is suitable to be used in the mashland.

Key words: Oncomelania hupensis； Niclosamide ethanolamine granule；Molluscicidal effect； Marshland

摘要： 目的 目的 观察5%杀螺胺乙醇胺盐颗粒剂的江滩现场杀螺效果。方法 方法 在江苏省扬中市选择3块有螺江滩， 采用 5%杀螺胺乙醇胺盐颗粒剂40 g/m2 喷撒法灭螺， 以26%四聚·杀螺胺悬浮剂4 g/m2 和清水为对照进行对比观察， 统计比较 现场杀螺效果。结果 结果 喷撒7 d后， 5%杀螺胺乙醇胺盐颗粒剂组钉螺死亡率为85.42%， 26%四聚·杀螺胺悬浮剂组为 82.35%， 清水组为2.86%。结论 结论 5%杀螺胺乙醇胺盐颗粒剂杀螺效果较好， 适合在江滩现场应用

关键词: 钉螺； 杀螺胺乙醇胺盐颗粒剂； 杀螺效果； 江滩