在池塘养鱼的生产中经常会出现鱼类浮头,尤其是精养高产鱼塘,鱼类放养密度较大,投饲、施肥量大,水中有机物质多,耗氧因子也多,更容易发生鱼类浮头。浮头就是鱼类无法维持正常的呼吸活动,被迫上升到水面利用表层水进行呼吸,出现强制性呼吸的现象。泛塘是严重浮头并出现大批鱼类 In the production of fish ponds often appear floating fish head, especially intensive high-yielding fish ponds, fish stocking density, feeding, fertilizer, water, organic matter, oxygen factor is also more likely to occur Fish floating head. Floating head is the fish can not maintain normal breathing activity, was forced to rise to the surface water using respiratory, forced respiratory phenomenon. Pan Tong is a serious floating head and a large number of fish