（1）改造池塘。水深（1．5－4米）同鱼产量成正比。一是要清出多淤泥，加固塘基。二是减少水体污染，增加蓄水量，提高鱼塘承载力。（2）套养高档鱼。成鱼池陈放养常规品种外，应投入运量的鳜、鲈、乌鳢、银鲫、淡水白鲳等高档鱼。因其比例小，密度稀，生长快，当年即可达商品 (1) transform the pond. Depth of water (1.5-4 meters) is proportional to fish production. First, clear out more than silt, strengthening pond base. The second is to reduce water pollution, increase water storage, increase the carrying capacity of fish ponds. (2) Nesting high-grade fish. Into the fish pond Chen stocking conventional varieties, should be put into the volume of 鳜, perch, clam, silver crucian carp, freshwater pomfret and other high-grade fish. Because of its small proportion, density, rapid growth, that year can reach the goods