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Research on Soil Nutrient Distribution in Guangyuan Tobacco-growing Area
Yu Yaoying,Wang Mingfu,Gu Huizhan,Guo Yingju,Yu Xiao and Yang Xue
Chinese Agricultural Science Bulletin . 2015, (12): 252 -256 .  DOI: 10.11924/j.issn.1000-6850.casb14110077