Effects of Bio-organic Fertilizers Combination with Chemical Fertilizer Reduction on the Soil Microbial Flora and Its Correlation of Bacterial Wilt of Flue-cured Tobacco

• Liguang ZHAO, 
• Xingying TANG, 
• Li TANG, 
• Zhi XU, 
• Wenjiao XIE, 
• Xiaoyong LI