Comparative experiment on ecological polyculture of Penaeus chinensis with different fish species
In order to make full use of seawater resources and continuously improve the economic and ecological benefits of aquaculture,the experiment of multi-trophic level comprehensive aquaculture of Penaeus chinensis intercropped with Takif ugu rubripes or the hybrid grouper Epinephelus Lanceo-latus♂ × E.f usco guttatus♀ was carried out.P.chinensis was stocked at 120,000 ind./hm2.T.ru-bripes was stocked at 490～667 ind./hm2 with the size of 230 g/ind.,the hybrid grouper was stocked at 851 ind./hm2 with the size of 25 g/ind.,612 ind./hm2 and 800 ind./h m2 with the size of 170 g/ind.,respectively.After 5 months of culture,in the polyculture of P.chinensis and T.ru-bripes,the yield of P.chinensis and T.rubripes was 3 040.5 kg/hm2 and 546.9 kg/hm2,respectively.In the polyculture of P.chinensis and the hybrid grouper,the yield of P.chinensis and the hybrid grouper was 3 474 kg/hm2 and 308.8 kg/hm2,respectively with the stocking size of the hybrid grouper 170 g/ind.,the yield of P.chinensis and the hybrid grouper was 3 562.5 kg/hm2 and 180.2 kg/hm2,respectively with the stocking size of the hybrid grouper 25 g/ind.
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