混养是指在同一水体内饲养多个养殖品种以充分利用水体的生产潜力和提高产量为目标的养殖方式。鱼虾鳅鳝蟹混养技术如下:一、选塘。池塘四周沟宽8米,深0.6～0.8米.滩面可提水至1.2米;池底为沙质土壤,淤泥较少;水源水质良好,注排水设施齐全;塘内可设小木船1条,用于投饵;施肥和管理。池塘内侧用密眼聚乙烯网布埋人土中,以防鳝、鳅、克氏螫虾、蟹等钻洞。池埂牢固,不漏不渗,用石棉瓦做防逃墙。一个养殖周期开始时,池塘要清淤修 Polyculture refers to raising multiple aquaculture species in the same water body in order to make full use of the water production potential and increase production as the goal of farming methods. Fish loach eel crab polyculture techniques are as follows: First, the election pond. Pond around the trench width of 8 meters, 0.6 to 0.8 meters deep. Beach can be raised to 1.2 meters of water; bottom of sandy soil, less sludge; water quality is good, complete drainage facilities; pond can be set of a small wooden boat, For feeding; fertilization and management. Inside the pond with dense polyethylene mesh buried in the soil, to prevent eel, loach, Keshi shrimp, crabs and other drilling holes. Pool 埂 solid, impermeable impermeable, anti-flee with asbestos tile wall. At the beginning of a breeding cycle, ponds should be cleared and silted