“高产鱼塘没有巧,种良肥多水质好”,这是广大渔民长期生产实践的总结。鱼塘水质的好坏,直接关系到鱼类的生长及养鱼户的经济效益。特别是夏秋季节,气温高,日照时间长,投饲施肥多,水质变化快,这个期间,水质的调节,成为鱼塘管理的关键。笔者近年走访了湖北省汉川县国营刁汊湖养殖场几户有经验的渔民,他们认为,调节水质,必须注重四个方面。 1.保持池水丰富的溶氧量 一般要求,池水溶氯量,要大于5毫克/升,否则,鱼摄食少,生长缓慢,饲料利用系数相对降低。怎样保持池水丰富的溶氧量? “High-yielding fish ponds are not clever, kind of good fertilizer and more water quality,” which is the conclusion of the long-term production practice of the majority of fishermen. The quality of fish ponds is directly related to the growth of fish and the economic benefits of fish farmers. Especially in summer and autumn, the temperature is high, the sunshine duration is long, feeding fertilizers and the water quality changes rapidly. During this period, the regulation of water quality becomes the key to fish pond management. In recent years, I visited a few families of experienced fishermen at the State-owned Diaoheji Lake Farm in Hanchuan County, Hubei Province. They believe that four aspects must be emphasized in regulating water quality. 1. To maintain a rich pool of dissolved oxygen, the general requirements, the amount of dissolved chlorine in the pool, to be greater than 5 mg / l, otherwise, less food intake, slow growth, feed utilization factor is relatively reduced. How to maintain the rich pool of dissolved oxygen?