Table 1. Physical and chemical properties of the maize rhizome soil samples.

Treatment	SOM (g·kg-1)	TN (g·kg-1)	TP (g·kg-1)	TK (g·kg-1)	AP (mg·kg-1)	AK (mg·kg-1)
Control group	31.98±0.71bc	0.40±0.00c	0.54±0.00c	15.33±0.93a	41.56±1.56c	115.00±10.41c
B. subtilis group	29.82±2.37c	0.35±0.00d	0.54±0.01c	14.40±1.20a	42.11±2.45c	135.00±13.23b
B. licheniformis group	34.60±0.82b	0.52±0.01a	0.74±0.00a	14.87±0.73a	77.89±1.58a	136.67±2.89b
B. amyloliquefaciens group	37.50±1.40a	0.41±0.01b	0.64±0.01b	15.53±0.47a	58.47±4.02b	170.00±10.00a
Compound strains group	38.45±1.41a	0.51±0.00a	0.50±0.00d	15.67±1.00a	31.75±1.82d	85.00±5.00d

Values are means ± standard error (n = 3). Statistical significance was set at p <0.05, which was calculated using Duncan’s multiple range tests. The same letter represents no significant difference. TN: total nitrogen, TP: total phosphorus, TK: total potassium, AP: available phosphorus, AK: available potassium