精养鱼池由于放养密度大,投饵施肥多,水中有机物和耗氧因子多,容易发生鱼类缺氧浮头的现象。如果措施不当则可能会由于严重浮头而造成大批鱼类窒息死亡,这种现象称为泛塘。泛塘给生产带来的损失极为严重,因此,在鱼类主要生长季节——夏季,必须时时注意防止鱼类严重浮头和泛塘的 Intensive fish pond due to stocking density, feeding more fertilizers, water and oxygen-rich organic matter, prone to the phenomenon of fish floating head. If improper measures are taken, the death of a large number of fish suffocating may be caused by a serious floating head. This phenomenon is called Pan Tong. The losses incurred by Pan Tong to production are extremely serious. Therefore, in the main growth season of fish, summer, care must be taken to prevent serious fish head and pan