有机肥是池塘养鱼能量物质的重要替补者。传统经验是把未经密封厌氧发酵(俗称沼气发酵)处理的有机肥(如人粪、作物秸杆、堆肥等)直接投入养鱼池塘,常常导致有机质因风化而逸失大量氮素,或沉积池底,形成淤泥——能量“陷井”或污染池塘水体,使鱼类生态环境恶化。对此,有些生产单位曾采用机械手段和化学手段加以改良。但因受农村电源、人力、资金等因素制约而难为广大养鱼户接受。近几年来兴起的利用沼气发酵处理有机肥,经实践证明,是符合生态 Organic fertilizers are important substitutes for pond fish energy substances. The traditional experience is that organic manures (such as human manure, crop straw, compost, etc.) that are handled by unsealed anaerobic fermentation (commonly known as biogas fermentation) are directly put into fish ponds, often resulting in the loss of large amount of nitrogen by organic matter or sedimentation Bottom of the pool, the formation of sludge - energy “trap” or pollution of pond water, fish deterioration of the ecological environment. In response, some production units have used mechanical means and chemical means to be improved. However, due to rural power, labor, capital constraints and other factors difficult for the majority of fish farmers to accept. In recent years the rise of the use of biogas fermentation of organic fertilizer, proved by practice, is in line with ecology