采用光合细菌控制水体中亚硝酸盐的研究  

Biological Control of Nitrite in Fish Farming Ponds by Photosynthetic Nonsulfur Bacteria

作　　者：刘双江[1] 孙燕[1] 岑运华[1] 杨惠芳[1] 

机构地区：[1]中国科学院微生物研究所,中国环境科学研究院水所

出　　处：《环境科学》1995年第6期21-23,共3页Environmental Science

基　　金：国家"八五"科技攻关项目

摘　　要：分离筛选到一株利用亚硝酸盐的光合细菌。试验结果表明，当亚硝酸盐浓度在０．０１—５０ｍｍｏｌ／Ｌ时，该菌株在７ｄ时间内能去除８０％以上的亚硝酸盐，该菌株去除亚硝酸盐的最适碳源是乙酸和乳酸。在养殖池塘中施用该菌株制成的菌剂，池塘中亚硝酸盐浓度下降５０％－８０％。itrite, a toxic factor for most aquatic animalsand causing a great loss for fishery if it was keptat a higher level in water, was found to be utilized and removed screened and isolated strains ofphotosynthetic nonsulfur bacteria. Experimentsindicated that the isolated strains removed nitriteby more than 80% when the nitrite in the bulkranged from 0, of to 5. 0 mmol/L, regardlessthey were cultured under illumination or in dark.Results also show that acetate and lactate werethe optimal C sources for nitrite removal. Fieldsuryeys on the nitrite concentration in fish far-ining ponds in Beijing area found that it wasabout 0. 006--0. 008 mmol/L. By using the isolated strains in the ponds, their nitrite concentrations decreased by 50 % -- 80 %.

关 键 词：水产养殖 光合细菌 亚硝酸盐 环境保护 

分 类 号：S96[农业科学—水产养殖] X520.6[农业科学—水产科学]