凡纳滨对虾与点带石斑鱼混养的经济效益研究

Economic benefits research on mixed culture of Litopenaeus vannamei and Epinephelus malabaricus

近年来,养殖水体水质不断恶化,造成病害经常发生。为了提高养殖效益,降低养殖风险,利用凡纳滨对虾(Litopenaeus vannamei)与点带石斑鱼(Epinephelus malabaricus)混养,改善养殖水质和利用生物防病原理减少病害发生,增加养殖经济效益。分别研究了凡纳滨对虾为主混养点带石斑鱼和点带石斑鱼为主混养凡纳滨对虾两种养殖模式的经济效益。结果表明,在以凡纳滨对虾为主混养点带石斑鱼模式下,混养点带石斑鱼密度为每667 m2584.5尾时,经济效益最好;在以带石斑鱼为主混养凡纳滨对虾模式下,混养凡纳滨对虾密度为每667 m27.15万尾时,经济效益最好。

In recent years, the aquatic diseases occur frequently because of the aquaculture water deterioration. For increasing the benefit and reducing the risk of aquaculture, people mixed culture of Litopenaeus vannamei and Epinephelus malabaricus, to improve the water quality and reduce the cultivation disease by the theory of biological disease prevention. The study mainly researched two cultivation types which were Litopenoeus vannamei or Epinephelus maloSaricus dominated in the mixed cultivation ponds. The results showed that the highest economic benefits in the mixed cultivation ponds with Litopenaeus vannamei dominating was got when the stocking density of Epinephelus malabaricus was 584.5 tails per 667 m^2. On the other side, the highest economic benefits in the mixed cultivation ponds with Epinephelus mcdaharicus dominating was got when the stocking density of Litopenaeus vannamei was 71.5 thousands per 667 m^2.