Table 4 The statistical results of variables quantity in H. perforatum samples
Average ± standard error (min, max) | Variable | Average ± standard error (min, max) | Variable |
|---|---|---|---|
206.93 ± 5.54 (103, 287) | Absorbable potassium | 2338.21 ± 75.33 (1103, 3822) | Altitude |
3.11 ± 0.13 (0.5, 5.7) | Absorbable phosphor | 19.5 ± 0.63 (5, 35) | Slope |
0.34 ± 0.01 (0.1, 0.57) | Total nitrogen | 2.63 ± 0.08 (1, 4) | Hill aspect |
0.09 ± 0.003 (0.02, 0.2) | EC | 0.85 ± 0.06 (0, 2.6) | Organic carbon |
7.23 ± 0.05 (6.2, 7.9) | pH | 42.5 ± 0.38 (35, 50) | Sand |
1.99 ± 0.07 (1, 3) | Phenological stages | 38.1 ± 0.61 (20, 50) | Silt |
1.63 ± 0.02 (1.06, 2.2) | Hypericin content | 19.4 ± 0.65 (5, 35) | Clay |