Table 1.

Physical and chemical properties of biochar leacheates.

Element	Different biochar leacheate concentrations (mg/50 ml)
	1(%)	3(%)	5(%)	7(%)	10(%)
EC (μs/cm)	10.6	11.3	12.1	13.4	14.1
PH (units)	7.23	7.35	7.50	7.82	7.96
K	3.231	3.255	3.317	3.324	3.352
Na	3.163	3.172	3.187	3.189	3.194
Mg	0.022	0.024	0.025	0.031	0.035
Ca	0.036	0.036	0.037	0.039	0.041
Cu	0.000	0.000	0.000	0.000	0.000
Fe	0.000	0.000	0.000	0.000	0.000
Zn	0.000	0.000	0.000	0.000	0.000
B	0.001	0.001	0.001	0.002	0.003
P	0.001	0.001	0.002	0.003	0.005
N-NO3	0.0001	0.0003	0.0003	0.0004	0.0006
N-NH4	0.0000	0.0000	0.0000	0.0001	0.0002
TOC	45.2	48.5	52.1	56.8	62.7