Fig. 4

Statistical comparison of relative abundance among groups of soil microorganisms in the inter-rhizosphere of different dominant plants based on the Kruskal-Wallis rank sum test. a, b statistical comparison of fungal communities at the phylum level and at the genus level, respectively; c, d statistical comparison of bacterial communities at the phylum level and at the genus level, respectively. Different colored bars indicate different groupings; the rightmost column shows P values, * represents P ≤ 0.05 and ** represents P ≤ 0.01. CK, the control group, SDW, Erect Milkvetch, ZHMX, Alfalfa, PJC, Phyllanthus pinnatifida, NT, Lemongrass, YT, Brassica