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Soil nutrient status in the 0 cm–20 cm soil layer of the experimental field.
| Year | pH | Organic matter (g kg−1) | Total nitrogen (g·kg−1) | Available phosphorus (mg·kg−1) | Available potassium (mg·kg−1) |
|---|---|---|---|---|---|
| 2021 | 5.78 | 18.7 | 1.5 | 18.3 | 122.3 |
| 2022 | 5.53 | 19.9 | 1.8 | 18.9 | 117.7 |
