Methane -generating pits were developed widespreadly in countryside in last thirty years. Utilization of methane not only saved large amount of energe sources, but also reduced environmental pollution. This is im-portant for ecological construction and new countryside construction.%随着中央和地方政府的大力推动,农村沼气池建设在过去的30多年中蓬勃发展,沼气利用不仅为农村节省了大量能源,也减少了时环境的污染.这时加强农村生态建设与新农村建设有重要意义.
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