基于梭鱼养殖的海水池塘循环水“跑道”模式效果探讨

Research on the Effects of Seawater In-pond Raceway Aquaculture Based on Liza haematocheila

为探索海水池塘循环水“跑道”养殖梭鱼的效果,开展梭鱼3种不同初始规格和放养密度,配套外塘养殖青蛤、泥蚶和缢蛏等贝类及南美白对虾的养殖效果评估。结果表明,试验“跑道”梭鱼存活率为89.9%~91.4%,折算产量为8334.0~13333.5 kg/hm^2、产值33.3万元~53.25万元/hm^2;外塘收获贝虾产量总计18600 kg,外塘产值35.4万元/hm^2;扣除成本后,该养殖模式经济效益在18.6万元/hm^2以上。该试验构建的海水池塘内循环流水“跑道”“圈养梭鱼”结合外塘“精养贝+虾”的养殖模式,实现了养殖过程水循环利用,具有良好的经济效益和生态效益。

In order to explore the effects of Liza haematocheila cultured in seawater in-pond raceway aquaculture system(IPAS),three treatments with different initial specifications and densities were applied in the feeding trial,and Cyclina sinensis,Tegillarca granosa,Sinonovacula constricta and Penaeus vannamei were polycultured in outside-pond.The results showed that the experimental fish were in good health and the survival rate were 89.9%-91.4%,and the converted production was 8334.0-13333.5 kg/hm^2,the output value was 333.0-532.5 thousand Yuan/hm^2.The total production in outside-pond including shellfish and shrimp was 18600 kg,the output value in outside-pond was 354 thousand Yuan/hm^2.After deducting the cost,the model benefited more than 186 thousand Yuan/hm^2.This experiment constructed the circulating water“raceway”and“captive barracuda”in the seawater pond combined with the external pond“intensive cultured shellfish+shrimp”breeding mode,and realized the water recycling in the breeding process,which had good economic and ecological benefits.