异育银鲫‘中科3号’和中华圆田螺稻田生态种养效果比较分析

拓展稻田综合种养殖品种,充分利用稻田资源,丰富市场供应,为山区稻渔综合种养产业稳步发展提供重要基础。在武夷山稻花鱼养殖示范基地,开展了异育银鲫‘中科3号’和中华圆田螺稻田生态种养殖比对试验和成效分析。试验结果表明,养殖周期139天,“稻+鲫+螺”模式总产量达9937.5 kg/hm²,比“稻+鲫”模式高出7.72%,比“稻+螺”模式低7.67%,总利润分别比“稻+鲫”和“稻+螺”模式高出25.83%和77.91%;其产出投入比、成本利润和销售利润率明显高于“稻+螺”模式。“稻+鲫+螺”生态种养模式有效提高了稻田综合种养成效,但还需要优化水产动物放养的协同比例和管理关键技术,进一步提升稻田多品种混养的比较效益。

Comparative Analysis on Ecological Comprehensive Rice-Fishery Cultivation of Allogynogenetic gibel Carp ‘CAS Ⅲ’ and Cipangopaludina cahayensis

The purposes are to enrich the variety of comprehensive rice-fishery cultivation, make full use of paddy resources, expand market supply and provide an important basis for the steady development of rice fishery comprehensive farming industry in mountainous areas. The comparative analysis on ecological comprehensive rice-fishery cultivation of Allogynogenetic gibel carp ‘CAS Ⅲ’ and Cipangopaludina cahayensis was conducted in Wuyishan City. The results showed that after 139 days of cultivation, the total yield of ‘rice+crucian carp+snail’ model reached 9937.5 kg/hm², 7.72% higher than ‘rice+crucian carp’ model, but 7.67% lower than ‘rice+snail’ model. The total profit of ‘rice+crucian carp+snail’ was higher than that of ‘rice+crucian carp’ and ‘rice+snail’ model by 25.83% and 77.91% respectively; the comparative benefits of output-input ratio, cost profit and sales profit rate were significantly higher than those of the ‘rice+snail’ model. The ecological farming model of ‘rice+crucian carp+snail’ could effectively improve the comprehensive farming effect of paddy field, but it is also necessary to optimize the key technologies and the mixed proportion of aquatic animal stocking in order to further improve the comparative benefits of rice-fishery cultivation in paddy field.