Table 3 Relative areas of main peaks of IR spectrum of Fe/Al-OC extracted from paddy soils and marsh soil after 30 days of incubation (%) (semi-quantitative)
From: Molecular changes of ferric oxide bound soil humus during the decomposition of maize straw
Soil types | Addition of maize straw (%) | Phenol-C | Amide-C | Polysaccharide-C |
|---|---|---|---|---|
TP | 0 | 81.08 | 7.18 | 11.73 |
RP | 0 | 82.79 | 6.44 | 10.77 |
PP | 0 | 80.48 | 8.03 | 11.49 |
MS | 0 | 79.47 | 7.09 | 13.44 |
TP | 6 | 68.38 | 8.39 | 23.23 |
RP | 6 | 74.67 | 7.71 | 17.62 |
PP | 6 | 71.94 | 7.17 | 20.89 |
MS | 6 | 77.89 | 7.66 | 14.45 |