沼气肥是投入沼气池内的人畜粪便和各种农作物秸秆及其他植物废弃物经密封发酵后的残留物。沼气池内原材料在发酵过程中,有40%～50%的干物质被分解,其中碳素大部分分解产生沼气,作为能源使用。氮、磷、钾等作物的营养元素则保留在残留物中,使之成为一种养分齐全、缓速兼备、肥劲稳定的优质有机肥,是无公害农产品、绿色食品的最佳用肥。 Biogas fertilizer is the residues of human and livestock manure and various crop stalks and other plant wastes that have been put into the biogas digester and sealed and fermented. Biogas digesters in the fermentation process of raw materials, 40% to 50% of the dry matter is decomposed, most of which carbon dioxide generated biogas, as an energy source. Nitrogen, phosphorus, potassium and other crops are retained in the residues of nutrients, making it a nutrient-rich, both slow-paced and stable high-quality organic fertilizer is pollution-free agricultural products, green food, the best fertilizer .