Property	Orchard A			Orchard B
Property	Apr	Jul	Dec	Apr	Jul	Dec
Nitrification activity (%)	96	59	33	92	77	33
Bacterial biomass (×10⁹ cells∙g⁻¹ soil)	1.4	1.7	1.8	1.3	1.6	1.7
oxidation activity (%)	93	38	0	96	66	0
oxidation activity (%)	100	100	100	91	100	100
P mineralization activity (%)	23	96	47	39	100	53
pH	7.0	7.4	7.5	7.2	7.6	6.8
Total carbon (TC) (mg/kg)	35,700	45,900	46,900	59,800	85,600	67,400
Total nitrogen (TN) (mg/kg)	4100	4500	5100	10,500	8500	7500
(mg/kg)	2	3	8	3	3	2
(mg/kg)	0	4	0	8	20	2
C/N ratio	9	10	9	6	10	9
Total phosphorus (TP) (mg/kg)	1280	1140	900	2720	2900	2720
Soluble phosphorus (SP) (mg/kg)	20	10	30	200	190	55
Total potassium (TK) (mg/kg)	5300	4700	4300	5300	4700	5000
Soluble potassium (SK) (mg/kg)	151	140	350	840	420	340