Table 2. Chemical characteristics of wheat straw (WS), corn straw (CS), wheat root (WR), corn root (CR), pig manure (PM), and cattle manure (CM).
| Organic materials | Total C (g kg-1) | Total N (g kg-1) | C: N ratio | Cellulose (%) | Hemicellulose (%) | Lignin (%) |
|---|---|---|---|---|---|---|
| Wheat straw (WS) | 450.7±16a | 5.1±0.8c | 88.0±5.1a | 36.4±0.0b | 30.6±0.2b | 7.8±0.1c |
| Corn straw (CS) | 461.8±14a | 5.2±0.6c | 89.0±4.2a | 36.5±0.2b | 33.2±0.0a | 4.0±0.0e |
| Wheat root (WR) | 329.7±17d | 3.7±0.3d | 89.6±4.3a | 28.2±1.6c | 25.0±1.8c | 6.4±0.3d |
| Corn root (CR) | 473.3±15a | 5.8±0.5c | 81.5±3.8a | 40.2±0.2a | 33.2±0.2a | 6.4±0.3d |
| Pig manure (PM) | 358.0±11c | 11.6±0.8b | 31.0±3.1b | 28.0±0.2c | 23.8±0.1c | 12.1±0.0a |
| Cattle manure (CM) | 396.9±12b | 18.0±0.9a | 22.0±2.8b | 19.7±0.1d | 25.6±0.4c | 8.6±0.2b |
Values are mean ± standard error of three replicates. Different letters in the same column indicate significant difference at P<0.05 among different materials.