中国对虾和三疣梭子蟹混养试验

Experiment on Polyculture of Chinese Shrimp( Penaeus chinensis) with Swiming Crab( Portunus trituberculatas)

于 1999～ 2 0 0 0年进行了中国对虾 (Penaeuschinensis)和三疣梭子蟹 (Portunustrituberculatas)的混养试验。1999年的产量对虾为 388 92kg/hm2 ,梭子蟹为 90 9 31kg/hm2 ,纯收入和投入产出比为 3 6 4万元 /hm和 1∶1 98;2 0 0 0年的产量对虾为 412 5 0kg/hm2 ,梭子蟹为 72 2 2 5kg/hm2 ,纯收入和投入产出比为 2 5 5万元 /hm2 和 1∶1 2 3。两个年度的实验都取得了较好经济效益 ,混养的纯利润比对虾单养提高了 7～ 10倍 ,投入产出比提高 1～ 2 5倍。

The polyculture experiment of Chinese shrimp with swiming crab was carried out from 1999 to 2000.The yield of Chinese shrimp and swiming crab were 388.92 kg/hm 2 and 909 31 kg/hm 2 respectively,the net profits was 3.64×10 4 yuan/hm 2 and the input output ratio was 1∶1.98 in 1999.The yield of Chinese shrimp and swiming crab were 412.50 kg/hm 2 and 722.25 kg/hm 2 respectively,the net profits was 2.55×10 4 yuan/hm 2 and the input output ratio was 1∶1.23 in 2000.Remarkable economic benefits had been achieved.The net profits of the polyculture increased by 7 10 times and the input output ratio increased by 1 2.5 times than those of monoculture of Chinese shrimp respectively.