Suitability Evaluation of Soil Fertility and Spatio-temporal Variation Characteristics of Nutrients for Tobacco Planting Soil in Jinsha River Basin

• Xudong ZHOU, 
• Tianhua HAN, 
• Zhufeng SHI, 
• Qing ZHANG, 
• Biao HE, 
• Mingying YANG, 
• Weihua PEI, 
• Peiwen YANG