Effect of adding earthworms at different time points on the physiological ecology of Vetiveria zizanioides in covering soil of gangue

• WANG Xingming, 
• CHEN Jiwang, 
• FAN Tingyu, 
• CHU Zhaoxia, 
• DONG Zhongbing, 
• DONG Peng, 
• LIANG Shuying, 
• DENG Ruilai