| In view of the problems existing in the application of rural household biogas pool in northern China in recent years,investigations by means of field trip,questionnaire survey,communication with users,managers,technicians,etc.were conducted in Jiaozuo,Jiyuan,Puyang,Wuzhi,Henan Province.The results showed that the main problems include lack of relevant policies,weakness of follow-up service,insufficient ability of solving problems by users,lack of raw materials,low comprehensive benefit and so on were existed in its popularization.Aiming at these problems,some constructive suggestions and countermeasures for its sustainable development were put forward. |