Table 3.

Richness and diversity indexes of AOB and AOA, plus the statistical comparison of community indexes among all treatments using the one-way ANOVA with the least significant difference (LSD).

Treatment	AOB					AOA
	OTUs	Chao1	Shannon	Simpson	Coverage (%)	OTUs	Chao1	Shannon	Simpson	Coverage (%)
CK	22.33 ± 1.53c	23.83 ± 2.75 b	1.93 ± 0.11 c	0.18 ± 0.04 a	99.97 ± 0.01 a	30.33 ± 4.04 c	34.22 ± 4.83 a	1.28 ± 0.04 d	0.40 ± 0.01 a	99.95 ± 0.02 a
N	32.33 ± 2.08 a	33.33 ± 0.58 a	2.14 ± 0.06 b	0.16 ± 0.01 a	99.98 ± 0.02 a	38.33 ± 2.08 a	41.00 ± 4.00 a	2.15 ± 0.07 a	0.17 ± 0.02 d	99.97 ± 0.01 a
N B1	31.33 ± 2.89 ab	31.79 ± 3.29 a	2.11 ± 0.10 b	0.17 ± 0.02 a	99.99 ± 0.02 a	36.33 ± 3.21 ab	40.67 ± 4.30 a	1.76 ± 0.07 c	0.26 ± 0.01 b	99.96 ± 0.02 a
N B2	30.67 ± 2.52 ab	31.00 ± 2.78 a	2.28 ± 0.10 b	0.20 ± 0.03 a	99.99 ± 0.01 a	35.33 ± 3.22 ab	40.83 ± 10.56 a	1.92 ± 0.06 b	0.21 ± 0.01 c	99.96 ± 0.02 a
N B3	29.33 ± 0.58 b	33.67 ± 5.03 a	2.47 ± 0.10 a	0.11 ± 0.01 b	99.97 ± 0.03 a	35.00 ± 1.00 b	39.28 ± 1.84 a	1.98 ± 0.04 b	0.20 ± 0.01 c	99.95 ± 0.02 a

Different lowercase letters indicate a significant difference at p < 0.05.