Figure 2: Relative abundances of the dominant bacterial phylotypes in the summer.

(A) and winter (B) soil samples. Relative abundances are based on the proportional frequencies of DNA sequences that could be classified at the phylum level. 100N: normal application rate of N, P2O5, and K2O was 185, 46, and 185 kg ha−1, respectively; 80N: 0.8 times N as in the 100N; 50N: 0.5 times N as in the 100N; CK: no N applied.