北方地区池塘养鱼的越冬问题是养鱼生产过程中的一个重要环节。北方地区的越冬期长达半年之久,到了冬季由于池塘水面结冰,鱼类在冰下水中进入休眠状态不吃食,只靠消耗体内的脂肪来维持生命,所以要采取正确的安全越冬方法和措施,才能减少越冬鱼类的死亡和经济损失。笔者经过几年 The problem of overwintering fish ponds in the northern part of the country is an important part of fish production. The wintering period in northern China is as long as six months. By the winter, when ponds are icy in water, the fish do not eat in the water under the ice and only rely on the consumption of body fat to maintain their life. Therefore, we must adopt the correct method of safe wintering and Measures to reduce the death and economic losses of wintering fish. After a few years