Conditioning with Lime and Fertilizer Improves Ionic Rare Earth Mine Tailings

Table 3

Growth characteristics and rare earth element content of Chinese cabbage grown in rare earth mine tailings conditioned with a combination of fertilizer and lime.

Treatment	Height (cm)	Fresh weight (g/plant)	ΣREEs (mg/kg)	La (mg/kg)	Ce (mg/kg)	Nd (mg/kg)	Y (mg/kg)
CK	—	—	—	—	—	—	—
C1	6.90a	1.12a	58.36a	12.15a	12.52a	9.84a	12.00a
C2	5.67ab	1.08a	37.9b	7.76b	9.07b	6.07b	5.98b
C3	4.26b	0.92b	15.95c	4.42c	1.48c	3.24c	2.23c

—: no data; CK: fertilizer (0.20 g N, 0.30 g P₂O₅, and 0.30 g K₂O per kg of tailings); C1: lime; C2: lime; C3: lime.