沼气肥包括沼气水肥和渣肥两部分。有人认为,秸秆、青棵和人畜粪尿等经过沼气池发酵,肥效会变成沼气燃烧掉,沼气肥也就没劲了。事实并不是这样。因为投入沼气池发酵的原料,经微生物分解产生的沼气。主要是碳氢化合物甲烷,它占沼气总量的60～70％,其余为二氧化碳、氢气、硫化氢和氮气等,主要的氮素肥分损失很少。 Biogas fertilizer, including biogas fertilizer and fertilizer two parts. Some people think that stalks, green trees and livestock excrement and other biogas fermentation, fertilizer efficiency will become biogas burn off, biogas fertilizer also boring. This is not the case. Because of biogas fermentation into raw materials, biodegradation generated by the biogas. Mainly hydrocarbon methane, which accounts for 60 ~ 70% of the total amount of biogas, the rest of the carbon dioxide, hydrogen, hydrogen sulfide and nitrogen, the main loss of nitrogen fertilizer little.