近年来,一些渔场、户出现了越冬鱼类开春时死亡的现象,通过研究分析发现,这与鱼类越冬的管理有极大关系。应该主要抓好以下几方面的工作: (1)越冬池的选择与清整消毒。(2)及时并塘与鱼种消毒。(3)合理控制越冬鱼类的密度。(4)晚秋时尽量延长投喂时间,提高鱼类本身的肥度,以适应越冬期间的体质消耗。(5)注意越冬期间的水质调节,及时扫除冰面积雪等,这些工作会直接影响越冬鱼类的成活率,因此我们必须重视。 在我国北方高寒地区,鱼类始越冬的时间一般在9月到10月中旬,最晚不超过10月底。 一、越冬池的选择与清整消毒 1、越冬池的选择 越冬池应背风向阳,冰下水深不得低于1米,最好在1.5～2米,面积最好在6667平方米左右,以便管 In recent years, some fisheries and households have experienced the phenomenon of overwintering fish died during the spring. Through the research and analysis, it is found that this has a great relationship with the management of overwintering fish. Should mainly do a good job in the following aspects: (1) the choice of winter pool and cleaning disinfection. (2) timely Tong and fish species disinfection. (3) Reasonably control the density of wintering fish. (4) try to extend the feeding time in late autumn, improve the fatness of the fish itself, in order to adapt to the physical consumption during the winter. (5) pay attention to the water quality adjustment during the winter, the timely removal of ice snow area, these work will directly affect the survival rate of wintering fish, so we must pay attention. In the alpine regions of northern China, the time for the fish to overwinter is generally from September to mid-October, at the latest no more than the end of October. First, the choice of overwintering pool and cleaning disinfection 1, overwintering pool selection The overwintering pool should be leeward, the ice depth of not less than 1 meter, preferably 1.5 to 2 meters, the area is best in 6667 square meters, so that the tube