天津市汉沽区水产技术推广站从１９９６年开始，为降低养虾成本和风险性，开展了三疣梭子蟹与对虾混养试验项目，并连续几年都取得了虾蟹互补的生态效果。２０００年５０００亩试验面积，总产虾蟹３９．０１万ｋｇ，其中蟹２７．６１万ｋｇ，总效益９５６万元，亩纯效益１９１ Hangu District, Tianjin Fisheries Technology Promotion Station from 1996 onwards, in order to reduce the cost and risk of shrimp, carried out Portunus trituberculatus and shrimp polyculture pilot project, and for several years have achieved the complementary ecological effects of shrimp and crab. 5000 acres of test area in 2000, the total production of shrimp and crab 390,100 kg, of which 276,100 kg crab, the total benefit of 9560000 yuan, the net benefit of 191 acres