广东沼气农业模式的典型调查与思考

Investigation and analysis of typical biogas agroecosystem models in Guangdong province

回顾了广东沼气发展历程,介绍了广东典型沼气农业模式,包括广东西南部丘陵区典型农户沼气模式,广东东部丘陵区典型农户沼气模式,广东东北部丘陵山区典型农户沼气模式,广东低洼地和积水区农户沼气模式,以及广东规模化养殖场沼气模式,并在此基础上分析了沼气农业模式的空间分布规律、沼气模式和经济发展的关系以及沼气发展的系统工程。

The history of biogas development was reviewed and the typical models of biogas agroecosystem in Guangdong province were introduced in this paper, including typical peasant household biogas model in south west hills, east hills and north hills, marsh and stagnant water area peasant household biogas model and aquatic breeding farm biogas model. And based on the structure, effects of these typical models were analyzed, which indicated that the biogas generators linked with well designed agroecosystem could alleviate the scarcity of rural energy, increase crop productivity, enhance the quality of products, decrease production cost, improve soil texture and fertility, increase biodiversity, reduce environmental pollution and damage caused by disease and pest. Also, it could realize the multilevel utilization of resources, improve the ecological environment, and therefore achieve significant social, economic and ecological benefits. Moreover, principle of its position, relationship with social-economic environment and system engineering approaches were even given further discussion.