Table 2.

Soil P fractions (mg P kg^–1 soil) in the La inoculation experiment

Group	Resin P	NaHCO3-Pi	NaHCO3-Po	NaOH-Pi	NaOH-Po	HCl P
La-Ctrl	0.057±0.003	0.005±0.002	0.205±0.007	14.29±0.24	9.41±0.24	0.0729±0.0108
LaA	0.075±0.003	0.029±0.004*	0.210±0.005	15.55±0.36*	9.84±0.28	0.0124±0.0032*
LaB	0.084±0.005	0.070±0.008*	0.333±0.009*	19.96±0.39*	9.09±0.31	0.0007±0.0005*
LaF	0.079±0.003	0.043±0.004*	0.210±0.005	15.44±0.25*	9.56±0.26	0.0121±0.0033*
LaG	0.062±0.007	0.056±0.005*	0.210±0.005	16.77±0.35*	9.66±0.35	0.0017±0.0008*
LaH	0.069±0.023	0.011±0.002	0.224±0.006	16.62±0.27*	9.57±0.38	0.0210±0.0049*
LaP	0.468±0.016*	0.263±0.008*	0.212±0.006	34.00±0.38*	9.43±0.23	452±6*
LaAP	1.051±0.022*	0.605±0.009*	0.288±0.006*	43.00±0.32*	10.78±0.19*	432±4
LaBP	0.457±0.012	0.490±0.019*	0.280±0.005*	40.65±0.22*	11.39±0.23*	437±9
LaFP	0.506±0.016	0.266±0.007	0.216±0.009	35.36±0.29*	9.56±0.27	448±8
LaGP	0.542±0.009*	0.335±0.013*	0.284±0.006*	34.86±0.30	12.68±0.22*	451±6
LaHP	0.445±0.009	0.456±0.015*	0.350±0.008*	34.03±0.33	12.71±0.32*	443±9
PSB	***	***	***	***	***	—
TCP	***	***	***	***	***	***
PSB * TCP	***	***	***	***	***	—

Values represent the mean of three replicates±SE (standard errors).

Significant differences among means were tested with a one-way ANOVA (Dunnett. Use La-Ctrl as the control category for LaA~LaH and LaP; use LaP for LaAP~LaHP).

La-Ctrl: control, La with P-free NBRIP added; LaA~LaH: PSB treatment, La with A~H suspension inoculation; LaP: TCP treatment, La with TCP supply and P-free NBRIP added; LaAP~LaHP: Combination treatment, La with A~H suspension inoculation and TCP supply.

PSB, TCP, and PSB*TCP: Two-way ANOVA for the factors of the PSB inoculation, TCP supply, and the interaction of the PSB inoculation ×TCP supply.

*** P<0.001, ** P<0.01, * P<0.05, — P≥0.05.