Table 4 Relative areas of main peaks of IR spectrum of Fe/Al-OC extracted from paddy soils and marsh soil after 90 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 | 80.21 | 6.42 | 13.37 |
RP | 0 | 81.52 | 6.58 | 11.90 |
PP | 0 | 78.57 | 6.51 | 14.92 |
MS | 0 | 78.65 | 6.52 | 14.83 |
TP | 6 | 78.03 | 6.85 | 15.12 |
RP | 6 | 77.53 | 6.53 | 15.94 |
PP | 6 | 75.17 | 6.64 | 18.18 |
MS | 6 | 75.95 | 6.22 | 17.84 |