沼气的生产管理,腐肥的制造使用,各地已积累了许多经验。但能否利用沼气粪液制造各种腐肥,或在沼气池内直接加草煤、磷矿粉来制取腐沼肥、腐沼磷肥,还值得探讨。据分析和报导:沼气粪液的速效氮要占全氮的80％,有的高达90％;残渣部份的速效氮只占全氮的20～50％左右。为此,我们去年进行了用沼气粪液制造腐肥的试验,在小麦、玉米、水稻上施 Production and management of biogas, the use of fertilizer production, has accumulated around the many experiences. However, it is worth discussing whether biogas slurry can be used to make various kinds of rotten fertilizers or to add grass coal and phosphate rock directly to biogas digesters to make biogas slurry and biogas slurry. According to analysis and report: The available nitrogen in biogas manure liquid accounts for 80% of total nitrogen and some as high as 90%; the available nitrogen in the residue part accounts for only about 20 ~ 50% of total nitrogen. To this end, we conducted a test of using biogas manure to make manure fertilizer last year, applied it on wheat, corn and rice