Affiliation: | 1. College of Agriculture, Guizhou University, Guiyang 550025;2.College of Tobacco Science, Guizhou University / Key Laboratory of Tobacco Quality Research in Guizhou Province, Guiyang 550025;3.Institute of Soil and Fertilizer, Guizhou Academy of Agricultural Sciences, Guiyang 550006;4.Scientific Observing and Experimental Station of Arable Land Conservation and Agriculture Environment (Guizhou), Ministry of Agriculture, Guiyang 550006 |