传统养鱼,从夏花养成食用鱼的周期,鲢、鳙、鲤、鲫一般要两年,草鱼、罗非鱼要三年。近年,我地科研部门通过反复试验,证明夏花完全可以当年养成食用鱼,667平方米鱼产量高达500千克左右,比传统养鱼提高经济效益60％～70％。其技术如下: Traditional fish culture cycle from the summer to develop food fish, silver carp, bream, carp, crucian carp generally two years, grass carp, tilapia to three years. In recent years, our scientific research department has repeatedly tried to prove that Xiahua can develop food fish that year. The output of 667 square meters of fish is about 500 kilograms, which is 60% -70% more economic than traditional fish farming. Its technology is as follows: