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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