河蟹不同套养模式成本效益分析

为优化河蟹套养不同品种养殖效益,构建河蟹+鳜鱼、河蟹+青虾+鳜鱼以及河蟹+小龙虾+鳜鱼三种河蟹套养模式,利用成本效益分析法对收益情况进行分析。结果表明:三种河蟹套养模式净利润分别为33552、32856和33369元/hm^2,模式间净利润水平无显著性差异;河蟹池套养鳜鱼能显著提高养殖效益,鳜鱼利润贡献达到4374~5622元/hm^2;河蟹价格波动显著影响三种河蟹套养模式净利润,河蟹池套养青虾、小龙虾能较好地分担市场风险。

The cost-benefit analysis on different polyculture models of Eriocheir sinensis

In order to optimize the benefits of different polyculture models of Eriocheir sinensis,three polyculture models were constructed:polyculture of mandarin fish and crab,polyculture of green prawn,mandarin fish and crab,polyculture of crayfish,mandarin fish and crab,and then the benefit of each model was analyzed using cost-benefit analysis method.The results showed that,the profits of the three polyculture models were 33552,32856 and 33369 yuan/hm^2 respectively,while there was no significantly difference in the profit level.Polyculture of mandarin fish and crab can significantly improve the farming efficiency while the profit contribution of mandarin fish reached 4374~5622 yuan/hm^2.The fluctuations of the crab prices significantly influenced the profit of the three models,the crayfish and green prawns in crab ponds could reduce the market risks.