当西方“石油农业”带来的经济、社会和环境问题日趋严重的今天,国外的科学家和农学家纷纷为今后的农业在寻找着出路。通过不断的试验和摸索,生态农业这个课题已越来越引起人们的广泛兴趣。 如在菲律宾的首都马尼拉附近,有个玛亚农场。它最早是个面粉厂,自1972年起逐步发展成一个农林牧副渔五业并举且互相结合的农工综合性农场。整个农场以沼气为纽带,形成一个物质循环系统。这个农场的农田、森林所出产的物质,用于养牛、养猪; Nowadays, when the economic, social and environmental problems brought by the western “oil agriculture” are getting worse day by day, foreign scientists and agronomists are looking for a way out for the future agriculture. Through continuous experimentation and exploration, the topic of ecological agriculture has drawn more and more people’s interest. As in the Philippine capital of Manila, there is a Mayan farm. It is the first flour mill, since 1972 and gradually developed into a farming, forestry, animal husbandry and fishery five industry simultaneously and combined with the agribusiness comprehensive farm. The whole farm uses biogas as a link to form a material circulation system. The farmland of this farm, the material produced by forests, is used for raising cattle and raising pigs;