Abstract: Objective To evaluate the cost?benefit of netting cultivation to block the spread of Oncomelania snails in lake re? gions. Methods The cost ?benefit of netting cultivation was investigated by interviewing in the field，the cost of Oncomelania snail survey and control was investigated by retrospective review in Gaoyou Lake regions of Jinhu County from 2009 to 2011. The benefit of netting cultivation to block the spread of snails in lake regions was calculated by the benefit?cost ratio（BCR），and then the cost?benefit of them was calculated. Results The area of netting cultivation in Gaoyou Lake regions was 70.77 hm2 ，the aver? age cost of netting cultivation was 495 595 yuan every year，the average income was 962 000 yuan every year，and the average ben? efit of netting cultivation was 466 405 yuan. The average cost of Oncomelania snail survey and control from 2009 to 2011 was 85 047.87 yuan in Gaoyou Lake regions. The ratio of cost ?benefit was 1.11∶1. The benefit was more than the cost. Conclusion There is a well benefit in lake regions during blocking the spread of snails by netting cultivation.

Key words: Oncomelania snail； Netting cultivation；Cost?benefit；Lake region

摘要： 目的 目的 评价湖区结合围网养殖设置拦螺网防止钉螺扩散的成本?效益。方法 方法 采取现场走访方法， 调查高邮湖区 围网养殖成本和效益， 同时回顾性调查2009-2011年金湖县在高邮湖区的查、 灭螺投入； 采用静态效益?成本比率法测算湖 区结合围网养殖设置防螺网防止钉螺扩散技术的经济效益， 计算效益成本比。结果 结果 金湖县在高邮湖区围网养殖面积为 70.77 hm2 ， 年均投入养殖成本495 595元， 年收入962 000元， 年养殖效益 （纯收入） 466 405元； 2009-2011年高邮湖区平均 每年查灭螺费用为85 074.87元。年净效益成本比为1.11∶1， 效益大于成本。 结论 结论 湖区结合围网养殖设置拦螺网防螺 技术在防止钉螺扩散的同时还具有良好的经济效益。

关键词: 钉螺； 围网养殖； 成本?效益； 湖区