Reclaiming Subsidized Land: An Evaluation of Coal Gangue Interlayers

Table 5

Total and available phosphorus of interlayered soil profiles.

	Treatment	0–10 cm	20–30 cm	40–50 cm	60–70 cm	80–90 cm	100–110 cm
TP (g/kg)	CK1	0.40 ± 0.04a	0.38 ± 0.05a	0.34 ± 0.03a	0.32 ± 0.02a	0.32 ± 0.04a	0.33 ± 0.02a
	CK2	0.38 ± 0.05a	0.37 ± 0.05a	0.32 ± 0.02a	0.31 ± 0.02a	0.23 ± 0.03b	0.26 ± 0.01b
	T1	0.34 ± 0.03a	0.33 ± 0.02a	0.21 ± 0.02b	0.33 ± 0.01a	0.20 ± 0.02b	0.24 ± 0.01b
	T2	0.35 ± 0.03a	0.31 ± 0.02a	0.21 ± 0.03b	0.21 ± 0.02b	0.33 ± 0.02a	0.22 ± 0.02b
	T3	0.33 ± 0.02a	0.32 ± 0.06a	0.21 ± 0.03b	0.21 ± 0.01b	0.32 ± 0.03a	0.24 ± 0.01b
	T4	0.36 ± 0.04a	0.32 ± 0.03a	0.21 ± 0.01b	0.32 ± 0.01a	0.32 ± 0.03a	0.23 ± 0.03b
	T5	0.34 ± 0.03a	0.33 ± 0.04a	0.21 ± 0.02b	0.22 ± 0.03b	0.33 ± 0.03a	0.26 ± 0.02b
	T6	0.34 ± 0.02a	0.33 ± 0.02a	0.34 ± 0.01a	0.23 ± 0.02b	0.33 ± 0.01a	0.25 ± 0.01b
	T7	0.35 ± 0.02a	0.34 ± 0.04a	0.33 ± 0.03a	0.22 ± 0.03b	0.34 ± 0.01a	0.24 ± 0.02b
	T8	0.33 ± 0.02a	0.32 ± 0.04a	0.19 ± 0.02b	0.21 ± 0.01b	0.32 ± 0.04a	0.23 ± 0.01b
OP (mg/kg)	CK1	8.78 ± 0.22a	8.35 ± 0.26a	7.53 ± 0.77a	6.26 ± 0.13a	6.14 ± 0.35a	6.22 ± 0.11a
	CK2	8.61 ± 0.12ab	7.94 ± 0.78a	7.23 ± 0.16a	6.44 ± 0.11a	4.48 ± 0.33b	4.90 ± 0.16b
	T1	7.67 ± 0.59bc	5.27 ± 0.43b	4.72 ± 0.62a	6.30 ± 0.07a	4.25 ± 0.16b	4.44 ± 0.25b
	T2	6.75 ± 0.37c	5.86 ± 0.41b	4.68 ± 0.31c	4.50 ± 0.21b	6.24 ± 0.15a	4.34 ± 0.31b
	T3	6.70 ± 0.33c	5.90 ± 0.29b	4.74 ± 0.28c	4.60 ± 0.33b	6.23 ± 0.27a	4.33 ± 0.39b
	T4	7.64 ± 0.27bc	5.76 ± 0.67b	4.80 ± 0.25c	6.70 ± 0.36a	6.71 ± 0.41a	4.31 ± 0.25b
	T5	6.95 ± 0.84c	5.65 ± 0.17b	4.81 ± 0.41c	4.79 ± 0.52b	6.74 ± 0.40a	4.21 ± 0.20b
	T6	7.08 ± 0.12c	6.19 ± 0.60b	5.74 ± 0.31bc	4.76 ± 0.42b	6.98 ± 0.35a	4.47 ± 0.23b
	T7	7.18 ± 0.14c	6.30 ± 0.20b	6.16 ± 0.28b	4.88 ± 0.44b	6.95 ± 0.73a	4.67 ± 0.28b
	T8	6.69 ± 0.32c	5.15 ± 0.16b	4.67 ± 0.22c	4.25 ± 0.18b	6.18 ± 0.27a	4.27 ± 0.49b