Kunming University of Science and Technology, affiliation not provided to SSRN, affiliation not provided to SSRN, Chinese Academy of Tropical Agricultural Sciences (CATAS), affiliation not provided to SSRN, Kunming University of Science and Technology, Kunming University of Science and Technology, Kunming University of Science and Technology, Chinese Academy of Tropical Agricultural Sciences (CATAS) and Kunming University of Science and Technology