Figure 6
Analysis of soil microbial function under different fertilizer treatments. Treatments included control (CK), chemical fertilizer only (CF), and 75% replacement of chemical with organic fertilizer (OM3). (A) Principal coordinate analysis (PCoA) of the microbials at KO function level based on the Bray–Curtis distances. (B) Principal coordinate analysis (PCoA) of nitrogen cycle genes at KO function level based on the Bray–Curtis distances. (C) Soil nitrogen cycle gene relative abundance in different fertilizer treatments. (D) Diagram of the microorganism nitrogen cycle pathways in soil. (The red line indicates that genes involved in the process are highly expressed in the OM3 group. The blue lines indicate that genes involved in the process are not highly expressed in the OM3 group.) (E) LEfSe linear discriminant analysis at KO function level.
