China Agricultural University, Shandong Academy of Agricultural Sciences, China Agricultural University, China Agricultural University, affiliation not provided to SSRN, affiliation not provided to SSRN, China Agricultural University, China Agricultural University - College of Agronomy and Biotechnology, Aarhus University - Department of Agroecology, China Agricultural University - College of Agronomy and Biotechnology, Aarhus University and China Agricultural University - College of Agronomy and Biotechnology