Table 1 Some properties of the sample materials used in this study
From: Optimized procedure for the determination of P species in soil by liquid-state 31P-NMR spectroscopy
Materials | pH | OM | TN | C | TP | OP |
|---|---|---|---|---|---|---|
(mg g −1 ) | (mg g −1 ) | (mg g −1 ) | (mg g −1 ) | (mg g −1 ) | ||
Farmland soil | 8.82 | 56 | 0.56 | 14.7 | 0.57 | 0.17 |
Farmland soil added with compost | 8.87 | 64 | 0.68 | 16.5 | 0.86 | 0.23 |
Forest soil | 7.47 | 83 | 0.36 | 10.2 | 0.72 | 0.08 |
Forest litter | 6.97 | 284 | 4.1 | 50.3 | 1.18 | 0.29 |
Compost | 8.97 | 522 | 21.9 | 206 | 2.18 | 0.35 |