1. School of Economics & Management Nanjing University of Science and Technology Xiaolingwei Street Nanjing210094 China
2. Department of Global Value Chains and Trade Faculty of Agribusiness and Commerce Lincoln University Christchurch Lincoln7647 New Zealand
3. College of Economics and Management Huazhong Agricultural University Wuhan430070 China
4. School of Agricultural Economics and Rural Development Renmin University of China Beijing100872 China