所谓“废水”即鱼塘排掉的水,鱼塘换水是池塘管理的一项重要措施,直接影响养殖效益。水老、水太肥、水质氨氮过高等都需换水。一般养一塘鱼需用二至三塘水。如水源不足,鱼塘效益较低,甚至亏损或绝产。养鱼的大量用水与水源的不足、节约水资源严格控制地下水的矛盾越来越突出,对此我场进行了鱼塘“废水”再利用的试验,三年的实践证明不但鱼塘“废水”可再 The so-called “waste water” is the water drained from fish ponds. Changing water from fish ponds is an important measure for pond management and has a direct impact on the breeding efficiency. Water is old, the water is too fat, water quality ammonia nitrogen is too high, etc. need to change the water. Generally need to raise one pond with two to three ponds. If insufficient water resources, ponds benefit less, or even loss or abortion. The large amount of water used for fish farming and the shortage of water resources and the contradiction between saving water resources and strictly controlling underground water have become more and more prominent. In this regard, we conducted a trial of “waste water” reuse of fish ponds. Three years of practice have proved that not only “waste water” Can be more