论述了我国沼气技术和工程升级换代的必要性和可行路线，沼气资源在中国的多样性，分析了若干探索性的案例。研究发现全国生物天然气生产潜力超过1 000亿m³/a,将成为我国部分地替代供应日趋紧缺的天然气的重要途径。

This paper discussed the necessity of upgrading biogas technology and relevant technical framework. Diversified feedstock of biogas in China was evaluated, and a few cases were analyzed. It is concluded that biomethane has potentials of annual production of above 100 billion cubic meters, and it will become very important origin for partly substituting natural gas that its resource is badly inadequate in China.

程序（1944―），男，江苏无锡市人，中国农业大学教授，博士生导师，主要研究方向为可持续农业与生物质能