Effect of effective microorganisms (EM) on aquatic bacterial community structure in polyculture mode of Eriocheir sinensis and Micropterus salmoides

• LI Shiheng, 
• NIE Zhijuan, 
• SHEN Lei, 
• SHAO Nailin, 
• SUN Yi, 
• XU Gangchun, 
• XU Pao