鱼生活在水中,如果水里氧气不足,就会浮头或死亡。特别是夏秋季节,稍有大意,将会“全军覆没”,这是养鱼生产中最担心的一个问题。随着科学养鱼水平的提高,越来越多的鱼塘安装了增氧机。实践证明,机械增氧,不仅使塘水的温度能保持平衡,增加水体的有效溶氧量,还可增加放养密度20～40％,降低饵料系数16％。购置和使用增氧机,需要注意四个问题: Fish live in water and float or die if there is not enough oxygen in the water. Especially in summer and autumn, with a slight effect, it will “annihilate the whole army.” This is one of the most worrisome problems in fish production. As scientific fish raising has increased, more and more fish ponds have aerators installed. Practice has proved that mechanical oxygenation, not only to maintain the temperature of the pond water to increase the effective dissolved oxygen in water, but also increase the stocking density of 20 to 40%, reducing the feed coefficient of 16%. Purchase and use aerator, you need to pay attention to four issues: