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一、从系统观点全面认识沼气的作用在开始办沼气时,我国就有较高评价,认为沼气在农村不仅可以解决部分生活燃料,而且沼渣液可以肥田。人畜粪便和有机废物入池可改善卫生面貌。这些认识经十多年的实践证明是正确的。不过现在来看,还存在一定局限性,比如强调社会效益多,对经效益注意不够,强调了产气和肥效,对综合利用注意不够。近年来,随着城乡沼气
First, a comprehensive understanding of the role of biogas from the system point of view When we start to do biogas, our country has a higher rating, that biogas can not only solve part of the living fuel in rural areas, but also biogas residue liquid fertilizer. Human and animal waste and organic waste into the pool can improve the health outlook. These understandings have proved correct after more than 10 years of practice. However, for now, there are still some limitations, such as emphasizing social benefits and paying insufficient attention to economic benefits, emphasizing gas production and fertilizer efficiency and paying insufficient attention to comprehensive utilization. In recent years, with the urban and rural biogas