Table 3 The soil basic chemical properties of the pretreatment.
Soil layer (cm) | Soil organic matter (g/kg) | Total N content (g/kg) | Total P content (g/kg) | Total K content (g/kg) | Available P content (mg/kg) | Available K content (mg/kg) |
|---|---|---|---|---|---|---|
0–20 | 4.34 | 1.22 | 0.55 | 5.95 | 3.47 | 145.3 |
20–40 | 1.58 | 0.85 | 0.19 | 5.49 | 2.12 | 136.2 |
40–60 | 1.29 | 0.81 | 0.07 | 5.35 | 1.79 | 131.1 |
