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对33口塘主要水化因子测定结果表明:暴发性鱼病的消长与池塘水环境中无机三氮的变化有关,发病塘氨氮、亚硝酸盐氮含量显著高于未发病塘,硝酸盐氮却低于未发病塘。病愈后期氨氮、亚硝酸盐氮明显减少,硝酸盐氮增加。
The results of the determination of main hydration factors in 33 ponds showed that the growth and decline of outbreaks of fish diseases were related to the changes of inorganic triazines in pond water environment. The contents of ammonia nitrogen and nitrite nitrogen in ponds were significantly higher than those in ponds without ponds and nitrate nitrogen Lower than the incidence of ponds. In the later stage of recovery, the ammonia nitrogen and nitrite nitrogen decreased obviously while the nitrate nitrogen increased.