Table 1.

Physical and chemical properties of the two soils.

Physical and chemical properties of soil	Farmland soil	Saline-alkali soil
Salt content (%)	0.03 ± 0.00**	0.38 ± 0.00
Organic matter (g/kg)	6.59 ± 0.46**	46.28 ± 3.31
Total nitrogen content (g/kg)	3.02 ± 0.09**	0.35 ± 0.04
Total phosphorus content (g/kg)	1.47 ± 0.09**	0.52 ± 0.03
Total potassium content (g/kg)	9.59 ± 0.16	9.79 ± 0.2
Available phosphorus content (mg/kg)	11.62 ± 2.16**	4.70 ± 0.54
Available potassium content (mg/kg)	973.00 ± 13.67**	90.36 ± 2.81
pH	7.32 ± 0.04**	9.03 ± 0.05

Farmland soil values with ** were significantly different from those of saline-alkaline soil according to the t-test (p < 0.01).