光合细菌调控水产养殖业水质的研究

Water Quality for Aquiculture Improved by Photosynthetic Bacteria

从土壤中分离出多株光合细菌 (PSB) ,利用室内静态试验和现场试验对其调节水质的功能进行了研究。结果表明 ,与对照组试验相比 ,光合细菌能调节水体的 pH值 ,静态试验6.97～8.01 ,现场试验6.82～8.52 ,增加水中氧气的含量 ,静态试验由2.01mg/L升至11.10mg/L ,现场试验由3.70mg/L升至9.94mg/L ,降低有害氨氮含量(NH4+-N) ,静态试验由0.30mg/L降至0.01mg/L ,现场试验也较对照组降低很多 ,文章并对光合细菌调节水质的机理进行了阐述。

Many trains of photosynthetic bacteria (PSB) were isolated from soils and further used for improving water quality for aquiculture at both laboratory and pond experiments scales, respectively. The experimental results showed that PSB could adjust water pH value with a range of 6.97～8.01 at the laboratory experiments and 6.82～8.52 at pond experiments, respectively. In addition, it was indicated that the bacteria could also increase oxygen contents in water from 2.01 mg/L to 11.10 mg/L and from 3.70 mg/L to 9.94 mg/L, and decrease toxic ammonia nitrogen (NH4+-N) from 0.30 mg/L to 0.01 mg/L, at lab and pond tests, respectively. The bacterium could decrease NH4+-N in water obviously, compared with control. The mechanism of water quality-adjusting with PSB was explained in the present paper.