TABLE 3.

Main bacterial groups or the group with significant difference (%).

Group	Control group				Treatment group				P-value
	C0	C14	C28	C42	S0	S14	S28	S42
At phylum level
Proteobacteria	25.3	24.7	31.2	23.9	28.6	32.8	37.4	40.6	0.43
Bacteroidetes	15.3	18.5	26.7	18.2	20.1	27.2	28.9	17.1	0.31
Acidobacteria	16.0	15.5	10.8	16.4	11.9	8.09	9.04	9.95	0.30
Planctomycetes	6.48	7.99	7.14	9.26	6.84	5.99	5.59	4.78	0.42
At genus level
Flavobacterium	1.60	4.06	11.4	4.10	3.66	9.00	13.7	6.49	0.19
Candidatus Nitrosotalea	9.53	0.62	0.19	0.34	3.73	2.90	0.89	2.13	0.08
Pseudomonas	0.29	1.55	1.49	0.92	0.29	4.87	4.69	5.67	0.53
Stenotrophomonas	0.02	0.36	5.21	0.35	0.01	3.05	2.46	5.15	0.66
Sphingomonas	1.44	1.35	1.42	1.15	2.38	1.48	1.81	2.38	0.55
Flavisolibacter	1.33	1.50	1.38	1.48	1.47	1.19	1.00	0.91	0.74
Gemmatimonas	1.06	1.35	1.31	1.56	0.90	0.99	0.94	1.34	0.75
Bryobacter	1.28	1.22	1.16	1.37	0.92	1.01	1.07	1.23	0.98
Acidovorax	0.74b	1.02b	2.02a	1.19ab	0.92b	0.72b	1.42ab	0.86b	0.01
Pedobacter	0.31	0.25	1.48	0.40	0.27	1.42	2.23	0.77	0.17
Chitinophaga	0.01	0.14	0.13	0.28	0.00	3.23	1.61	1.33	0.60
Haliangium	1.06ab	0.56bc	0.49bc	0.63abc	1.22a	0.44bc	0.33c	0.49bc	0.00
Ferruginibacter	0.37	1.09	0.71	0.96	0.31	0.65	0.52	0.34	0.05
Herbaspirillum	0.18b	0.38b	0.30b	0.18b	0.16b	0.22b	1.12a	0.33b	0.03
Mizugakiibacter	0.92a	0.07b	0.22b	0.14b	1.12a	0.07b	0.09b	0.18b	0.00

n = 3; different letters (a, b, or c) for same item indicate significant differences at P < 0.05 level; C0, C14, C28, and C42 represent the sampling days 0, 14, 28, and 42 in the control group, respectively; S0, S14, S28, and S42 represent the sampling days of the treatment group.