1. Spatial and temporal distribution of crop straw resources in 30 years in China;Zhu;J Northwest A&F Univ,2012
2. China׳s crop residues resources evaluation;Xie;Chin J Biotechnol,2010
3. EFYP. Twelfth five-year planning. Beijing: National Development and Reform Committee of China; 2011 [In Chinese].
4. Regulations on electricity price from renewable energy. Beijing: National Development and Reform Committee of China; 2006 [In Chinese].
5. Announcement of comprehensive utilization of resources and policy on its added-value tax. Beijing: Ministry of Finance and State Administration of Taxation; 2008 [In Chinese].