草鱼是我国淡水养殖的优良品种，但由于培育草鱼种成活率较低，近几年的养殖数量有所下降。但对于闲置河道及小型水库和湖泊较多的地区来说，养殖草鱼相对效益要高于其它品种。为探索大规格草鱼种培育技术，笔者在本地区一些淡水养殖场进行了试验，１９９８年试验面积为２０亩 Grass carp is an excellent breed of freshwater aquaculture in China. However, due to the low survival rate of grass carp breeding, the number of aquaculture has declined in recent years. However, for the idle river and small reservoirs and lakes more areas, the relative efficiency of farmed grass carp is higher than other varieties. In order to explore large scale grass carp cultivation techniques, the author conducted experiments in some freshwater farms in the area. In 1998, the test area was 20 mu