Study on the Relationship between pH and Organic Matter Components, Ion Content in Baoshan Tobacco-planting Soil

• Zhiming HU, 
• Longjie XIE, 
• Biting DUAN, 
• Shaomei WU, 
• Ruhe ZHANG, 
• Shaobang YANG, 
• Lin WANG, 
• Maojie YANG