土壤腐殖质是评价红壤肥力的重要因素,根据前人研究:一般土壤腐殖质的含量及组成受土壤地带性的影响。胡敏酸与富啡酸的比值自南向北逐渐递增,红壤胡敏酸与富啡酸的比值小于1。本文着重研究同一地区自然成土因素类同的情况下,红壤 Soil humus is an important factor to evaluate red soil fertility. According to previous studies, the content and composition of soil humus generally affected by soil zonality. The ratio of humic acid to fulvic acid gradually increased from south to north, and the ratio of humic acid to fulvic acid was less than 1 in red soil. This paper focuses on the same area of ​​natural soil conditions in the same circumstances, the red soil