Quantitative Estimation of Nutrient Resources Supply of Livestock Manure in Yunnan Province and Analysis of Its Potential to Substitute Chemical Fertilizer

• Jinsong WANG, 
• Congping LI, 
• Junyuan LU, 
• Huiyu ZHAO, 
• Yuanyuan JIANG, 
• Xiaochen ZHAO, 
• Yadong ZHANG, 
• Weiping XING