Effects of boron-treated rhizobial inoculum on soluble sugar concentration in alfalfa roots, stems, and leaves

• CHEN Yonggang, 
• SHI Shangli, 
• WU Fang, 
• KANG Wenjuan, 
• ZHANG Huihui, 
• A Yun, 
• LI Xinglong, 
• CHEN Jian'gang