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高寒地区冰封期长,鱼类越冬长达4～5个月,鱼类越冬管理难度相对较大。在鱼类越冬管理上,需要做好以下工作。一、勤测氧,注意冰下水体的溶氧变化情况测氧有助于了解冰下水体溶氧变化情况,以便及时采取应对措施。目前,测氧多采用化学试剂测氧法,这种方法比较经济,但操作起来较为麻烦,如果经济条件允许。可购买测氧仪器测氧,仪器测氧操作起来较为方便。11～12月份,可1周测1次,1～3月份应3～5天测1次;如鱼类越冬密度较高,每米~3水体超过0.5千克,春节前后要加强测氧,1～2天即应测氧1次。
Frozen long period in the alpine region, winter fish up to 4 to 5 months, winter fish management more difficult. In the winter management of fish, need to do the following work. First, diligent measurement of oxygen, pay attention to changes in dissolved oxygen in the water under ice Oxygen helps to understand changes in the dissolved oxygen in water in order to take timely measures to deal with. At present, the oxygen measured using more chemical oxygen measurement method, this method is more economical, but more troublesome to operate, if the economic conditions permit. Oxygen measurement instrument can be purchased to measure oxygen, oxygen measurement instrument more convenient operation. 11 ~ December, 1 week can be measured once, 1 to 3 months should be measured 3 to 5 days; such as fish overwintering high density, more than 0.5 kg per meter body of water, before and after the Spring Festival to strengthen the oxygen, 1 ~ 2 days that should be measured oxygen 1 times.