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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。
Objective To evaluate the cost-benefit of preventing the snail from spreading in the lake area in combination with the seine culture. Methods The method of on-the-spot visit was used to investigate the cost and benefit of seine breeding in Gaoyou Lake. At the same time, the investigation was carried out in Jinhu County in Gaoyou Lake from 2009 to 2011. The static benefit-cost ratio method Prevention of snail net snail proliferation of economic benefits, the calculation of cost-benefit ratio. Results Jinhu County in Gaoyou Lake area seine net area of 70.77 hm2, the average annual cost of farming input 495 595 yuan, annual income of 962 000 yuan, the annual breeding income (net income) 466 405 yuan; 2009-2011 Gaoyou Lake District average annual inspection Off spiral costs for 85 074.87 yuan. The annual net benefit cost ratio is 1.11: 1, the benefit is greater than the cost. Conclusion The lake zone fence farming combined with anti-spiral barrier technology to prevent snail spread also has good economic benefits.