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四位一体大棚是集塑料暖棚、猪圈、沼气池、绿色植物为一体的农业生态系统工程。近年来，在北方推广取得了良好的生态、经济效应。 一、作用与机制 塑料暖棚为养殖业、沼气发酵、绿色植物生长发育提供热源，增加棚内热量；养殖业为沼气发酵提供基质；沼气燃烧为绿色植物
Four-in-one greenhouse is a plastic greenhouse, pigsty, digesters, green plants as one of the agricultural ecosystem engineering. In recent years, the promotion in the north has achieved good ecological and economic effects. First, the role and mechanism Plastic greenhouse for aquaculture, biogas fermentation, growth and development of green plants to provide heat to increase greenhouse heat; aquaculture to provide the substrate for biogas fermentation; biogas combustion of green plants