黑龙江省地处寒温带,是东北三省最冷的省份,冰封期达160余天,冰厚一般达80—100cm,所以鱼类越冬安全是我省渔业生产的一个重要环节,由于“抽水、少氧”而使越冬鱼类死亡的现象在我省经常发生。鱼类越冬期间要有一定的补氧措施,安全越冬才有保障。常见的补氧方法归结几类,各地可 Heilongjiang Province is located in the frigid and temperate zone, which is the coldest province in the three northeastern provinces. With a frozen period of more than 160 days, its ice thickness is generally 80-100cm. Therefore, the safety of fish overwintering is an important link in the fishery production in our province. Because of “pumping water and less Oxygen ”and the phenomenon of overwintering fish deaths occur frequently in our province. Fish during the winter there must be a certain amount of oxygen measures, there is protection for the safety of winter. Common methods of oxygen boils down to several categories, all over