池塘内循环流水养殖草鱼的研究

Study on Aquaculture of Grass carp(Ctenopharyngodon idella)Reared in In-pond Raceway System

为推动池塘内循环流水养殖模式(简称流水槽养殖)在宁夏地区的应用,于2017-2018年对银川光明渔场基地流水槽系统的草鱼生产情况和水质变化进行了调查分析。结果表明:草鱼产量在2017年达到了68.1 kg/m^(3),2018年达到了76.8 kg/m^(3);整个养殖期间,流水槽内和流水槽外塘中水质均保持良好;同时,养殖尾水通过稻渔共作系统处理,既减少了污染,也实现了水稻种植化肥的减量。总的来说,与稻渔共作系统相结合的池塘内循环流水养殖模式既稳产高效又生态环保,值得大规模推广。

In order to promote the application of circulating aquaculture mode in the In-pond Raceway System(IPRS)in Ningxia,the production and water quality changes of grass carp(Ctenopharyngodon idella)in the flume system of Yinchuan Guangming Fishery Base were investigated and analyzed from 2017 to 2018.Results showed that the grass carp yield reached 68.1 kg/m^(3)in 2017 and 76.8 kg/m^(3)in 2018.During the whole breeding period,water quality in and outside the IPRS remained good.At the same time,the aquaculture tail water was treated by rice-fish farming system,which not only reduced pollution,but also reduced the amount of fertilizer for rice planting.In general,the IPRS combined with rice-fish farming system is stable-yield,efficient and environmentally friendly,which is worthy of large-scale promotion.