Abstract: Objective To explore a high molluscicidal efficient method in special Oncomelania hupensis snail environments. Methods In 2005 and 2006，in large special environments（rubble creek beaches and seepage barren hills with snails），the me? chanical soil?buried method（excavator digging to bury deep snails）and manual soil?buried method were used respectively，and the results were compared for the cost?effectiveness. Results With the mechanical soil?buried method in 2006，the investment was 0.78 yuan/m2 ，and the compression rate of snail areas was 100%；with the manual soil?buried method in 2005，the investment was 1.34 yuan/m2 ，and the compression rate of snail areas was 20.26%. The former was much better than the latter. Conclusion In the large special environments with snails，the mechanical soil?buried method is superior to manual soil?buried method.

Key words: Oncomelania hupensis；Mechanical soil?buried method for snail control；Manual soil?buried method for snail con? trol； Cost?effectiveness

摘要： 目的 目的 探索特殊有螺环境 （特殊环境） 的高效灭螺方法。方法 方法 2006年对乱石溪滩、 渗水荒山等大面积特殊环 境， 采用挖掘机进行一次性深挖深埋灭螺 （机埋灭螺）， 灭螺后， 连续7年观察灭螺效果， 并与2005年采用春、 秋两季人工铲 草土埋2次、 药杀8次的灭螺方法 （人工灭螺） 的效果和成本进行比较。结果 结果 2006年采用机埋灭螺法， 投入为0.78元/ m2 ， 有螺面积压缩率达100%； 2005年采用人工灭螺法， 投入为1.34元/m2 ， 有螺面积压缩率为20.26%。机埋灭螺比人工灭螺投 入降低41.79%， 灭螺效果提高79.74%。结论 结论 大面积特殊环境采用机埋灭螺优于人工灭螺。

关键词: 钉螺； 机埋灭螺； 人工灭螺； 效果?成本