The Effect of Bio-agent Duotaibao on Trichoderma Enrichment in Tobabcco Field Soil

• HE Yonghong, 
• ZENG Yixin, 
• LI Guiying, 
• LIU Yuejing, 
• QIN Xiyun, 
• CHEN Xingquan, 
• XIE Yong, 
• CHEN Suiyun