该项目是原国家水产总局下达的,针对我国北方地区淡水养殖鱼类越冬成活率低的问题,采取以生物增氧为关键措施,在弄清越冬池理化因子、生物状况及其变化规律的基础上。在鱼类越冬水体中培养耐低温、适弱光照的浮游植物,利用其光合作用释放氧气来补充水中溶氧,促进鱼类安全越冬。 The project was originally issued by the State Fisheries Administration, in response to the problem of low survival rate of overwintering freshwater cultured fish in northern China. Taking bio-oxygenation as the key measure is the basis of clarifying the physical and chemical factors, biological conditions and their changing rules of overwintering pool on. In fish overwintering water body to cultivate low temperature, suitable for light photos of phytoplankton, the use of photosynthesis to release oxygen to supplement dissolved oxygen in water, promote fish safety wintering.