【摘要】 目的观察单纯黑色地膜覆盖法在云南山区的灭螺效果,为推广其使用提供科学依据。方法选择南涧县乐秋村的有螺梯田,按从上到下的顺序分成A、B、C、D、E 5组,其中A、B、C、D 4组为实验组,实施单纯黑色地膜覆盖灭螺,覆膜时间分别为30、60、90 d和120 d;E组为对照组,采用50%氯硝柳胺乙醇胺盐可湿性粉剂喷洒灭螺,比较两种方法的灭螺效果与成本。结果单纯黑色地膜覆盖法覆膜90 d和120 d后,覆膜区域均未查到钉螺,活螺平均密度与灭螺前相比下降100%,1年的灭螺成本不高于对照组。结论单纯黑色地膜覆盖法灭螺效果较好,可在不宜开展药物灭螺地区推广应用。更多还原

【Abstract】 Objective To evaluate the molluscicidal effect of black plastic mulching in mountainous areas of Yunnan Province. Methods In Leqiu Village,Nanjian County,Yunnan Province,the terraced fields with Oncomelania hupensis snails were divided into A,B,C,D,E groups,and of which,A,B,C,D groups,as the experimental groups,were administered with simple black plastic mulching for 30 days,60 days,90 days and 120 days respectively;Group E,as the control group,was administered with 50% niclosamide ethanolamine salt wettable powder spraying. Results In Group C and D(simple black film mulching for 90 days and 120 days),no snails were found after the administration,the average density of living snails decreased by 100%,and the cost of one year was similar to that of the control group. Conclusion The molluscicidal effect of black plastic mulching is goodinmountainousareas.更多还原