每年的１０月下旬至１１月上旬，是养殖河进棚越冬的时节，５月中旬是越冬培育的河出棚的季节，进出棚前后，由于环境的改变以及河对寒冷环境的应激反应，各地的养殖户都发生不同程度的死鱼现象，使养殖效益下降，直接给养殖生产单位和个人造成很大的经济损失，因此做好河越冬? From late October to early November of each year, it is the season where the breeding river enters the shed and the mid-May is the season where the overwintering river is shed. Before and after entering and exiting the greenhouse, due to the environmental changes and the stress response of the river to the cold environment, Of the farmers have occurred to varying degrees, the phenomenon of dead fish, so that the benefits of farming decreased directly to aquaculture production units and individuals caused great economic losses, so do the river wintering?