作者机构:College of Economics and Management, Northeast Agricultural University, Harbin 150030, China
相关基金:Supported by the National Natural Science Foundation (71303040); Chinese Postdoctoral Science Foundation 54 Group of First Aid (2013M540268); the Fund Project of Humanities and Social Science of Youth in Research of the Ministry of Education (13YJC790142)
Yah Ji (1990-), female, Master, engaged in the research of animal husbandry economy. E-mail: saltzhongyi@ 163.com
Corresponding author. E-mail: licuixia.883@163.com