池塘鱼蟹混养,以蟹为主养,搭配鱼类,既可充分利用水体,又能净化水质,相互促进,共同发展。生产实践证明,实行鱼蟹混养,亩可产河蟹150～200公斤,产鱼200～300公斤,比单养河蟹经济效益高。其养殖技术如下: 一、池塘条件:混养池应选择在靠近水源、水量充足、无污染、排注水方便的地方。面积以1～5亩为宜,水深1.5米左右,要求塘底土质为粘土或砂壤土,淤泥不宜过 Pond fish polyculture, mainly to raise crabs, with fish, both to make full use of water, but also purify the water quality, promote each other and common development. Production practice shows that the practice of fish and cows polyculture, mu can produce crab 150 to 200 kg, 200 to 300 kg of fish, monk raising crabs than the high economic benefits. The farming techniques are as follows: First, the pond conditions: polyculture pond should be chosen near the water, adequate water, pollution-free, easy to pour water place. Area of ​​1 to 5 acres is appropriate, the water depth of about 1.5 meters, the soil at the end of the soil is clay or sandy loam, silt should not be too