Effects of nitrogen phosphorus and potassium mixed fertilizer application on growth dynamics and yield of Glycyrrhiza uralensis

• Ying JI, 
• Jia-jie ZHANG, 
• Long-qiang WANG, 
• Hai-ming LIN, 
• Jun-ji HUANG, 
• Zhen-xin CHEN, 
• Xi-ze WANG, 
• Yong-fu TAO