传统的斑点叉尾孵化设备有:孵化槽、孵化环道、流水孵化池等,其孵化方式均是开放式流水孵化,在生产实践中发现此类孵化方式用水量大,水体早晚温差变化大,病害较多,对受精率和孵化率有较大影响。鉴于此,2007-2010年期间,课题组连续4年开展了封闭式循环水孵化斑点叉尾的试验,并与常规水槽流水 The traditional channel catfish hatching equipment: hatching tank, hatching ring, water hatching pond, hatching are open hatch, hatching in the production practice found that such a large amount of water, the temperature changes in the morning and evening water big , More diseases, the fertilization rate and hatching rate have a greater impact. In view of this, during the period of 2007-2010, the research group carried out the experiment of incubating Channel Catfish with closed circulating water for 4 years in a row,