Table 5 Relative areas of main peaks of IR spectrum of Fe/Al-OC extracted from paddy soils and marsh soil after 180 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 | 71.84 | 9.09 | 19.06 |
RP | 0 | 74.60 | 6.56 | 18.84 |
PP | 0 | 76.08 | 6.59 | 17.34 |
MS | 0 | 77.89 | 6.82 | 15.29 |
TP | 6 | 76.55 | 7.66 | 15.80 |
RP | 6 | 74.94 | 6.78 | 18.28 |
PP | 6 | 77.30 | 7.17 | 15.53 |
MS | 6 | 80.59 | 6.89 | 12.52 |