Table 2 The initial growth of seedlings and physicochemical properties of three soil substrates before drought experiment
Seedlings/Soil substrate property | Humus soil | Loam soil | Sandy-Loam soil |
|---|---|---|---|
Bulk density (g·cm− 3) | 1.18 ± 0.02b | 1.35 ± 0.02a | 1.32 ± 0.02a |
Total porosity (%) | 53.19 ± 1.12b | 58.90 ± 0.91a | 36.72 ± 0.95c |
Aeration porosity (%) | 25.61 ± 0.48a | 23.52 ± 0.53a | 13.01 ± 0.99b |
Water absorption capacity | 0.23 ± 0.01b | 0.26 ± 0.01a | 0.18 ± 0.01c |
Penetrate rate (g·min− 1) | 4.49 ± 0.04a | 4.01 ± 0.12b | 3.04 ± 0.18c |
Evaporation rate (g·h− 1) | 0.59 ± 0.01a | 0.50 ± 0.01b | 0.37 ± 0.01c |
Total nitrogen (mg·g− 1) | 7.09 ± 0.78a | 3.11 ± 0.05b | 1.20 ± 0.03c |
Total phosphorus (mg·g− 1) | 0.71 ± 0.04a | 0.34 ± 0.09b | 0.32 ± 0.01b |
Available phosphorus (mg·kg− 1) | 13.10 ± 0.82a | 5.04 ± 0.21b | 12.75 ± 0.69a |
Height (cm) | 58.9 ± 3.70a | 55.0 ± 4.62a | 50.6 ± 4.77a |
Basal diameter (mm) | 7.68 ± 0.90a | 7.14 ± 0.62a | 6.77 ± 0.43a |