Table 5 Soil EC1:5, pH values, and Na+ concentration in different saline and alkaline stress treatments in a calcareous desert soil
Treatment | Salinity and alkalinity | EC1:5 (dS·m−1) | pH (1:2.5) | Na+ concentration (g/kg) |
|---|---|---|---|---|
Control (CK) | No additional salinization or alkalization | 0.35 | 8.16 | 0.060 |
NaCl (CS) | Moderate salinization | 1.39 | 8.43 | 0.886 |
Na2SO4 (SS) | Moderate salinization | 2.01 | 8.19 | 0.827 |
Na2CO3 + NaHCO3 (AS) | Moderate alkalization | 0.63 | 9.92 | 0.466 |