1Institute of Vegetable Crops, Hunan Academy of Agricultural Science, Changsha 410125, China.
2College of Horticulture and Landscape, Yunnan Agricultural University, Kunming 650201, China.
3Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming 650224, China.
4Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China.