Effects of neutral salt mixture on growth, photosynthesis, and physiological characteristics of Gerbera jamesonii ‘Yunnan Red’

• SONG Junzhi, 
• XU Chengxuan, 
• WU Wentao, 
• ZHANG Yun, 
• WANG Jinghan, 
• GAO Qinghai, 
• JIA Shuangshuang