众所周知 ,“鱼儿离不开水”。水是水产养殖动物 (鱼、虾、蟹、贝等 )的生存、生活环境 ,水质好坏直接影响到养殖对象的生长发育 ,从而关系到产量和经济效益。在倡导健康养殖观念 ,推行无公害水产养殖生产的今天 ,对养殖水质管理有着更高的要求。1　水质管理的重要性就生物学而 As we all know, “fish can not do without water.” Water is the living and living environment of aquaculture animals (fish, shrimp, crab, shellfish, etc.). The quality of water directly affects the growth and development of aquaculture objects, thus affecting the yield and economic benefits. In advocating the concept of healthy farming, promoting the production of pollution-free aquaculture today, aquaculture water quality management has higher requirements. 1 The importance of water quality management on biology