highly significantp < 0.001
The two-way ANOVA further confirmed that reclamation age, fertilization, and their interaction exerted highly significant effects ( p < 0.001) on the contents of labile P (H 2 O-Pi), moderately labile P (NaOH-Pi), and stable P (HCl-Pi), underscoring their strong combined regulatory effect on soil inorganic P fractions. 3.1.3.