“在生物质能源开发中,降解最充分、利用最便捷、生态效果最好、多重利用最切实、建设和运行成本最低、技术最成熟的途径就是沼气生产。”著名经济学家杨承训、微生物学家杨承谕,最近通过媒体建议,当前我国生物质能源不能靠粮食, “In bio-energy development, bio-gas production is the most efficient way to degrade, use the most convenient, have the best ecological effects, use multiple-use most effectively, have the lowest construction and operating costs, and have the most mature technology.”" Yang Chengxun, a renowned economist, The microbiologist Yang Chengjun recently advised the media that China’s current biomass energy cannot rely on food.