Analysis of the Characteristics and Influencing Factors of Grain Output in Henan Province
Li Qingsong,Deng Sujun,Xu Guojin,Wen Qian and Zhu Jiawei
Chinese Agricultural Science Bulletin . 2015, (18): 226 -230 .  DOI: 10.11924/j.issn.1000-6850.casb14120033