目前池塘养鱼增氧机械种类较多,常用的有以下几种: 1.叶轮式增氧机。该机增氧效果好,动力效率高。使用时(?)机浮在池塘中央并用绳索在岸边系牢。工作时叶轮旋转,搅拌水体,促使水层上下对流,将表层富氧水送到底层,把贫氧底层水向上提升,使(?)个水体的溶氧趋向均衡。 Current pond oxygenation machinery more types commonly used in the following: 1. Impeller aerator. Aerobic effect of the aircraft is good, high power efficiency. When used (?) Float in the middle of the pond and tied with a rope on the shore. During the work, the impeller rotates and agitates the water body to promote the up-down convection of the water layer. The oxygen-rich water is sent to the bottom layer, and the oxygen-poor bottom water layer is lifted upwards so that the dissolved oxygen in the water bodies tends to be balanced.