highly significantP ≤ 0.01
Post- grouting stage After grouting, the interaction among soil depth, N level, and fertilizer type was highly significant ( P ≤ 0.01) (Fig. 3 d and 4 d).
Post- grouting stage After grouting, the interaction among soil depth, N level, and fertilizer type was highly significant ( P ≤ 0.01) (Fig. 3 d and 4 d).
As soil depth increased, soil SWC exhibited a decreasing trend.
In 2023, SWC showed a trend of initially increasing and then decreasing with increasing soil depth.