The Growth Characteristics and Ginsenoside Content in Two-year-old Panax notoginseng under Potassium Regimes

• Hainan WEI, 
• Jinyan ZHANG, 
• Guangqiang LONG, 
• Wei FAN, 
• Zhengui MENG, 
• Longgen LI, 
• Zhongjian CHEN, 
• Junwen CHEN