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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