Evaluation of Phytoavailability of Heavy Metals to Chinese Cabbage (Brassica chinensis L.) in Rural Soils

Table 3

Selected properties of the studied soils.

Soil code	pH	OC^a	CEC^b	EC^c			Clay
		%	Cmol kg^−1	dS m^−1	g kg^−1		%
A	4.1	1.3	3.9	0.20	4.47	19.4	47
B	4.5	0.8	10	0.19	0.50	6.7	28
C	4.5	17	50	0.31	2.51	18.6	34
D	4.8	2.1	9.9	0.26	3.66	7.11	33
E	5.3	4.2	3.5	0.21	1.40	1.54	18
F	5.6	3.1	5.0	0.82	6.95	8.37	37
G	5.6	4.3	13	1.30	2.44	8.49	27
H	6.1	3.8	17	0.51	8.62	9.29	38
I	6.1	1.5	9.9	0.66	2.89	6.60	29
J	6.4	1.9	7.8	2.58	1.08	14.4	25
K	6.5	2.9	32	0.32	0.83	14.0	36
L	7.0	1.4	9.7	2.54	2.35	5.43	31
M	7.0	1.5	7.7	1.08	1.62	6.27	24
N	7.1	0.8	8.5	1.40	2.21	7.07	19
O	7.3	1.6	8.3	1.06	2.70	9.23	30
P	7.5	0.3	8.9	1.42	0.97	14.0	18
Q	7.6	2.3	4.4	0.87	1.40	2.25	10
R	7.7	1.3	5.9	0.37	1.68	6.27	18
S	7.8	1.6	9.6	0.42	0.75	6.80	29
T	8.1	1.1	4.4	0.53	3.37	3.98	15
U	8.2	1.6	3.9	16.5	2.19	6.53	20
V	8.8	0.6	8.5	10.7	2.26	1.98	30

Organic carbon.
Cation exchange capacity.
Electrical conductivity.
Oxalate extractable iron.
Dithionite-citrate-bicarbonate extractable iron.