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研究结果表明，玉米秸秆和苜蓿各腐解期土壤胡敏酸红外光谱均具有一般胡敏酸的光谱特征；其光谱变化特征可反映胡敏酸的形成、“熟化”进程；腐解６～９个月期间是胡敏酸芳构化、缩合和甲基分解等反应的活跃期，腐解９个月后的胡敏酸已达到较高的芳构度和缩合度。不同腐解期腐解物的红外光谱可反映物料的腐解进程，１７２０ｃｍ￣（－１）和８７０ｃｍ￣（－１）吸收带可作为表征两种物料腐解进程的指标。腐解物组分对红外光谱影响的研究证实了木质素未直接参与腐殖质形成过程。
The results showed that the soil humic acid infrared spectra of corn stalks and alfalfa during the decomposing period all had the spectral characteristics of common humic acid. The spectral characteristics of humic acid could reflect the formation of humic acid, the process of “ripening”, the decomposition of 6-9 During the month, the active phase of aromatization, condensation and methyl decomposition reaction of humic acid, humic acid 9 months after decomposition has reached a higher degree of aromaticity and condensation degree. The infrared spectra of decomposing materials during different decomposing period can reflect the decomposing process of the materials. The absorption bands of 1720cm -1 and 870cm -1 can be used as indicators to characterize the decomposing process of the two materials. The study on the influence of decomposing components on the infrared spectra confirmed that lignin did not directly participate in the humus formation process.