The moderate substitution of Astragalus sinicus returning for chemical fertilizer improves the N cycle function of key ecological bacterial clusters in soil - Minghao Lv; Yongdong Wang; Xiaofen Chen; Wenjing Qin; Wencong Shi; Weifeng Song; Jingrui Chen; Changxu Xu (Frontiers in Microbiology, 2023)