The concentration and molar percentage of water-soluble
Ca2+ for all treatments were compared after 6 months and
18 months After 6 months, the concentrations of
Ca2+ significantly increased with FGD-gypsum application
rate in the 0–10 cm soil layer by 2.63–15.9 cmol/kg compared
with the control, and the molar percentages were increased by
5.76–18.2 times, correspondingly.