Table 1.
Soil chemical parameters (average ± SD) in phase 1 bare soil and in phase 2 bulk soil in the different salinity treatments.
| Water treatment | Total soil C (%, w/w) | Total soil N (%, w/w) | C:N ratio | pH | EC1:5 [dS m−1] |
|---|---|---|---|---|---|
| Phase 1: bare soil after the salinization treatment | |||||
| Soil without straw | |||||
| Control | 0.28 ± 0.02 | 0.033 ± 0.005 | 8.5 ± 1.5 | 7.8 ± 0.3 | 0.076 ± 0.004 |
| Low salinity | 0.29 ± 0.01 | 0.037 ± 0.003 | 8.1 ± 1.0 | 7.7 ± 0.0 | 0.348 ± 0.018 |
| High salinity | 0.29 ± 0.01 | 0.035 ± 0.004 | 8.5 ± 1.1 | 7.6 ± 0.3 | 1.728 ± 0.066 |
| Soil amended with straw | |||||
| Control | 0.98 ± 0.03 | 0.059 ± 0.005 | 16.7 ± 1.5 | 7.5 ± 0.1 | 0.179 ± 0.003 |
| Low salinity | 0.96 ± 0.09 | 0.056 ± 0.006 | 17.3 ± 2.5 | 7.5 ± 0.0 | 0.465 ± 0.018 |
| High salinity | 1.12 ± 0.13 | 0.054 ± 0.009 | 21.2 ± 3.9 | 7.5 ± 0.0 | 1.678 ± 0.072 |
| Phase 2: bulk soil after plant growth | |||||
| Soil without straw | |||||
| Control | 0.31 ± 0.01 | 0.034 ± 0.005 | 9.0 ± 0.8 | 7.6 ± 0.0 | 0.147 ± 0.032 |
| Low salinity | 0.31 ± 0.01 | 0.029 ± 0.005 | 10.8 ± 1.8 | 7.6 ± 0.0 | 0.280 ± 0.061 |
| High salinity1 | 0.31 ± 0.01 | 0.025 ± 0.004 | 12.6 ± 1.9 | 7.7 ± 0.0 | 1.612 ± 0.206 |
| Soil amended with straw | |||||
| Control | 0.83 ± 0.04 | 0.045 ± 0.006 | 18.4 ± 1.7 | 7.3 ± 0.0 | 0.153 ± 0.006 |
| Low salinity | 0.99 ± 0.03 | 0.043 ± 0.004 | 23.2 ± 2.0 | 7.4 ± 0.0 | 0.347 ± 0.036 |
| High salinity | 1.07 ± 0.11 | 0.047 ± 0.005 | 22.9 ± 2.3 | 7.4 ± 0.0 | 1.153 ± 0.076 |