Variation of Soil Bacterial Communities during Lettuce Continuous Cropping Jie Hong, Yue Yang, Yi Gao, LianQuan Zhong, QuanMing Xu, XinXin Yi, YiQian Liu and XiuZhi Gao E3S Web Conf., 131 (2019) 01091 Published online: 19 November 2019 DOI: 10.1051/e3sconf/201913101091