Table 2.
Effects of different fertilization treatments on soil chemical properties.
| Treatment | AN (mg/kg) | AK (mg/kg) | AP (mg/kg) | SOM (g/kg) | pH |
|---|---|---|---|---|---|
| CK | 126.70 ± 10.006b | 399.07 ± 50.305d | 145.98 ± 14.806c | 19.79 ± 2.061c | 7.37 ± 0.339ab |
| SDH.2 | 167.00 ± 22.068ab | 614.24 ± 110.761bcd | 160.20 ± 13.865bc | 27.86 ± 6.949ab | 7.21 ± 0.110ab |
| SDH.3 | 164.21 ± 18.803ab | 649.88 ± 134.228bcd | 189.71 ± 16.990abc | 27.83 ± 3.870ab | 7.20 ± 0.221ab |
| SDH.4 | 170.36 ± 9.641ab | 794.22 ± 213.390bc | 174.82 ± 3.146abc | 27.87 ± 1.353ab | 7.04 ± 0.152b |
| SKR.2 | 168.75 ± 19.524ab | 731.11 ± 153.914bc | 173.98 ± 2.919abc | 26.27 ± 2.188abc | 7.07 ± 0.173ab |
| SKR.3 | 174.96 ± 53.873a | 634.34 ± 46.173bcd | 189.85 ± 28.077abc | 23.26 ± 4.041abc | 6.96 ± 0.101b |
| SKR.4 | 182.68 ± 14.533a | 656.22 ± 22.177bcd | 222.91 ± 92.265ab | 29.50 ± 2.003a | 7.14 ± 0.190ab |
| SYT.2 | 148.09 ± 25.510ab | 566.77 ± 101.258 cd | 174.01 ± 22.474abc | 21.01 ± 4.380bc | 7.08 ± 0.586ab |
| SYT.3 | 163.61 ± 19.075ab | 1087.46 ± 205.957a | 230.38 ± 20.139a | 23.65 ± 1.645abc | 7.45 ± 0.188a |
| SYT.4 | 171.85 ± 48.770ab | 870.88 ± 301.069ab | 241.88 ± 76.922a | 28.62 ± 9.434ab | 7.40 ± 0.148ab |
AN, alkali-hydrolysable nitrogen; AK, available potassium; AP, available phosphorus; SOM, soil organic matter. The definitions of CK, SDH.2, SDH.3, SDH.4, SKR.2, SKR.3, SKR.4, SYT.2, SYT.3, and SYT.4 are shown in Table 1. The different letters in the table indicate a significant difference at p < 0.05.