摘要
通过对暗纹东方水槽中硝化细菌对NH4+ -N转化率的测定 ,定量了解了硝化细菌的硝化率。结果表明 :过滤水槽的沙粒中硝化细菌数量平均比水中要高 2 1倍 ,高出对照组 10倍 ;沙粒的硝化率为水体的 10 0倍 ;影响硝化细菌对NH4+ -N转化的主要因素为温度、溶解氧和细菌数量。
The measurement on the conversion rate of nitrifying bacteria to NH 4 + N were determined in the filtering trouphs of Takingfugu obscurus. The nitrifying rate of nitrifying bacteria was understood quantitatively. The results showed that the quantity of the nitrifying bacteria in the sands of the filtering trouph was 21 times greater than that in the normal water, 10 times greater than that in the controlled group. The nitrifying rate of the sands was 100 times greater than the normal water. The major factors affecting the nitrifying bacteria to NH 4 + N are temperature, DO and biomass bacteria. Therefore, it is indicated that filtering trouphs can effectively self purify the fish pond environment.
出处
《上海水产大学学报》
CSCD
2001年第4期303-306,共4页
Journal of Shanghai Fisheries University
基金
江苏省科工委资助项目"黄鳝集约化养殖"(BE9963 7)
