Table 1 Basic properties of soils and organic materials
Soils and materials | TOC (g kg−1) | TN (g kg−1) | pH (H2O) | C/N | WSS (g kg−1) | HA (g kg−1) | FA (g kg−1) | HU (g kg−1) |
|---|---|---|---|---|---|---|---|---|
Soil CA | 5.89 ± 0.07 | 0.61 ± 0.01 | 8.10 ± 0.10 | 9.59 ± 0.10 | 0.09 ± 0.04 | 0.99 ± 0.20 | 3.86 ± 0.07 | 4.48 ± 0.30 |
Soil UV | 9.96 ± 0.16 | 1.02 ± 0.01 | 6.99 ± 0.10 | 9.74 ± 0.06 | 0.09 ± 0.04 | 0.78 ± 0.12 | 3.71 ± 0.40 | 9.00 ± 0.21 |
Soil UA | 17.04 ± 0.13 | 1.79 ± 0.04 | 4.03 ± 0.03 | 9.54 ± 0.20 | 0.11 ± 0.04 | 1.87 ± 0.11 | 2.34 ± 0.17 | 10.29 ± 0.22 |
Tobacco straw biochar | 356.20 ± 3.11 | 8.39 ± 0.25 | 10.86 ± 0.04 | – | – | – | – | – |
Wheat straw biochar | 344.70 ± 1.80 | 9.42 ± 0.03 | 10.67 ± 0.04 | – | – | – | – | – |
Tobacco straw | 470.13 ± 1.43 | 15.96 ± 0.13 | – | – | – | – | – | – |
Wheat straw | 436.93 ± 1.44 | 8.12 ± 0.07 | – | – | – | – | – | – |