近年来,在国家大力提倡发展清洁低碳能源的政策支持下,农村推广沼气池建设产生了良好的经济效益和社会效益,许多地区已普遍利用沼气烧水、做饭、照明。而生产沼气的副产品——沼渣和沼液的利用价值也不容忽视。沼液沼渣不仅富含有机质、氮、磷、钾等营养成分,还含氨基酸、维生素、酶、微量元素等生理活性物质,是优质高效、无毒无害、缓速兼备的有机肥料,是可供农作物特别是蔬菜享受的绿色营养餐 In recent years, under the policy of vigorously promoting the development of clean low-carbon energy in the country, the promotion of biogas digesters in rural areas has produced good economic and social benefits. In many areas, biogas boil-water, cooking and lighting are widely used. The biogas byproduct - biogas residue and biogas utilization value can not be ignored. Biogas residue is not only rich in organic matter, nitrogen, phosphorus, potassium and other nutrients, but also with amino acids, vitamins, enzymes, trace elements and other physiologically active substances, is high quality and efficient, non-toxic and harmless, slow speed both organic fertilizer is Green nutritious meals for crops, especially vegetables