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春季是鲤鱼的繁殖季节。如果存在以下情况,就会严重影响繁殖性能和经济效益。一是亲鱼成熟度不足,造成产卵少,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或霉雨天气;四是孵化塘清塘不彻底,留有鱼苗天敌;五是在鱼苗出膜后日常管理达不到要求而造成死亡等。针对?
Spring is the season of carp breeding. If there are the following conditions, it will seriously affect the reproductive performance and economic benefits. First, inadequate maturation of broodstock, resulting in less spawning, fertilization rate is low; Second, during the hatching of watery mildew eggs; Third, the case of cold air or moldy weather during incubation; Fourth hatching pond is not clear, not to leave Fry natural enemies; five is the daily management of fish fry after reaching the requirements of death and so on. against?