由于冬季生态条件及鱼类生理状态的特殊性,鱼类在越冬期间死亡的原因是十分复杂的,在某些情况下可能由一方面的因素起决定性的作用,而在多数情况下则是各方面因素综合作用的结果,主要有以下方面。一、冬季冰下缺氧或缺水。综合几年来对鱼类越冬情况的调查分析,越冬期间发生鱼类 Due to the particularities of winter ecology and the physiological status of fish, the reasons for the death of fish during the wintering period are very complex, and in some cases may be decisive for the one hand, and in most cases for each As a result of the comprehensive effect of the factors, there are mainly the following aspects. First, lack of oxygen or water in winter ice. Based on the investigation and analysis of overwintering fish species over the past few years, fish occur during the winter