近二年来,笔者在几个养鱼户池塘进行试验,当池塘冬季抽干水后,连续几天不放水进行干冻干晒,效果很好。其优点是消灭了野杂鱼和病原体,减少了鱼病的发生。下面请看两个实例。 In the past two years, the author conducted experiments in several fish farmers’ ponds. When ponds drained dry water in winter, they dried for a few days in a row without drying their water, and the effect was very good. Its advantage is to eliminate the wild trash fish and pathogens, reducing the incidence of fish diseases. Now see two examples.