在高密度养鱼生产中,鱼塘里水的含氧量是提高鱼产量的决定性因素。鱼类的健康受水中稳定的、最佳的含氧量的影响。要确保水中含有足够的氧气,可以定时地输入含饱和氧的水,或采用各式各样的增氧装置。有些地方采用空气压缩机,有的则在高密度养鱼池里采用水车式和叶轮式的组合装置,增氧效果都不错。但这些设备一般都是体积大、重量重,不适宜在小规模生产中和小型池塘里使用。从下面的表格里可以看出,其中小型增氧机(起 In high-density fish production, the oxygen content of water in ponds is a decisive factor in raising fish production. The health of fish is affected by the steady, optimal oxygen content of the water. To ensure that the water contains enough oxygen, you can enter the water containing saturated oxygen regularly, or use a variety of oxygenation devices. Air compressors are used in some places, while waterwheel and impeller combinations are used in high-density fish ponds to enhance aerobics. However, these devices are generally bulky and heavy, unsuitable for use in small-scale production and in small ponds. As can be seen from the table below, which small aerator (from