光合细菌是一类水圈微生物,红色或紫红色,在光照条件下能利用各种有机物进行营养繁殖,把二氧化碳合成有机物,并固定大气中的氮。由于光合细菌含有丰富的营养和具有独特的生理功能,引起了国内外科学家的高度重视,对光合细菌进行了广泛的研究,取得了令人振奋的成果。一、光合细菌在水产养殖业的应用 Photosynthetic bacteria is a type of hydrosphere microorganisms, red or purple, in the light conditions can use a variety of nutrients for vegetative reproduction, the synthesis of carbon dioxide into organic matter, and the fixed atmosphere of nitrogen. As photosynthetic bacteria is rich in nutrition and has unique physiological functions, it has aroused great attention of scientists both at home and abroad. The photosynthetic bacteria have been extensively studied and achieved encouraging results. First, photosynthetic bacteria in aquaculture applications