春季是鲤鱼的繁殖季节。但若管理措施不当,将会导致繁殖率低,养殖效益差。引起鲤鱼繁殖率低的主要原因有五个:一是亲鱼未达成熟期,导致产卵少,受精率低。二是孵化期间鱼卵出现水霉病。三是孵化期间遇冷空气及霉雨天影响。四是孵化塘清塘不彻底,留有鱼苗天敌。五是鱼苗出膜后日 Spring is the season of carp breeding. However, if management practices are not properly implemented, it will lead to low reproduction rates and poor breeding benefits. There are five main reasons for the low reproduction rate of carps: First, the broodstock did not reach maturity, resulting in less spawning and low fertilization rate. Second, during the incubation period there is water fungus disease. Third, the case of cold air and moldy rain during the incubation period. Fourth, hatching ponds are not completely clear ponds, leaving frogs natural enemies. Five is the day after the fish fry