Table 1. Soil nutrient content and soil pH in different precipitation treatments and soil depths.
| Variables | R50 | R100 | R150 | P-Value | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SD1 | SD2 | SD3 | SD1 | SD2 | SD3 | SD1 | SD2 | SD3 | Pre | SD | Pre*SD | |
| TN (g kg-1) | 2.3 ± 0.1 a | 2.1 ± 0.1 b | 1.9 ± 0.1 b | 2.4 ± 0.0 a | 2.1 ± 0.0 b | 2.1 ± 0.1 b | 2.3 ± 0.1 a | 2.0 ± 0.1 b | 2.0 ± 0.0 b | 0.041 | 0.000 | 0.253 |
| SOC (g kg-1) | 8.1 ± 0.1 a | 6.1 ± 0.3 bc | 6.2 ± 0.2 c | 8.0 ± 0.0 a | 7.0 ± 0.1 b | 6.6 ± 0.3 bc | 7.7 ± 0.3 a | 6.8 ± 0.2 bc | 6.6 ± 0.3 bc | 0.045 | 0.000 | 0.049 |
| TP (g kg-1) | 0.7 ± 0.0 | 0.7 ± 0.0 | 0.7 ± 0.0 | 0.7 ± 0.0 | 0.8 ± 0.0 | 0.7 ± 0.0 | 0.7 ± 0.0 | 0.7 ± 0.0 | 0.7 ± 0.0 | 0.231 | 0.687 | 0.213 |
| pH | 7.8 ± 0.1 ab | 7.8 ± 0.1 ab | 7.9 ± 0.1 ab | 7.8 ± 0.1 ab | 8.0 ± 0.2 a | 8.1 ± 0.1 a | 7.7 ± 0.1 b | 7.9 ± 0.1 ab | 8.0 ± 0.2 ab | 0.022 | 0.003 | 0.626 |
Notes.
- Pre
- Precipitation
- SD
- soil depth
- SD1
- soil depth 0–9.9 cm
- SD2
- soil depth 10–19.9 cm
- SD3
- soil depth 20–30 cm
- Pre*SD
- Precipitation*soil depth
Values are mean ± standard error (n = 3).
Means in a row without a common superscript letter differ (P < 0.05) as analyzed by two-way ANOVA.