Relative abundances of selected bacterial taxa below topsoil (0.2–3 m) from desert and oasis with different fertilizer treatments.

Desert: the original soil from which the oasis was derived; No fertilizer: the control (CK); Fertilizer: the average values of six fertilizer treatments (PK, NK, NP, NPK, NPKR, and NPKM). Values at the depth are weighted means. Different letters within each line indicate that treatment means are significantly different at p Relative abundances of selected bacterial taxa below topsoil (0.2–3 m) from desert and oasis with different fertilizer treatments.