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本文系统剖析了熊毅—傅积平改进法区分的土壤结合态腐殖质的形成特点，胡、富组成及其结合特征。结果表明：（１）用０．１ｍｏｌ／ＬＮａＯＨ及０．１ｍｏｌ／ＬＮａＯＨ＋０．１ｍｏｌ／ＬＮａ＿４Ｐ＿２Ｏ＿７混合液连续浸提的松结态（Ｈ＿１）和稳结态（Ｈ＿２）腐殖质所占的比例随土壤ｐＨ升高分别呈减少和增加趋势。统计分析显示Ｈ＿１与游离态铁、铝呈极显著的正相关，与交换性钙呈极显著负相关，Ｈ＿２则与交换性钙呈极显著正相关，而与游离态铁、铝呈极显著负相关，不能被浸提的紧结态腐殖质（Ｈ＿３）与ｐＨ及各种胶结物质均无显著关系。（２）松结态腐殖质（Ｈ＿１）的胡富比低于稳结态腐殖质（Ｈ＿２）的胡富比。前者与游离态铝呈显著正相关，后者则与土壤ｐＨ和交换性钙呈显著正相关。（３）根据溶出物的元素组成，明确松结态主要是铝、铁键结合的腐殖质，但也包含少部分钙键结合的腐殖质，稳结态则主要是钙键结合的腐殖质
This paper systematically analyzes the forming characteristics of soil bound humus, the compositions of Hu and Fu, and their binding characteristics by Xiong Yi-Fu Ji-Ping improved method. The results showed as follows: (1) The proportion of H_1 and H_2 humus continuously extracted with 0.1mol / L NaOH and 0.1mol / L NaOH + 0.1mol / L Na_4P_2O_7 mixture increased with the increase of soil pH High were decreased and increased trend. Statistical analysis showed that there was a significant positive correlation between H 1 and free-form iron and aluminum, a significant and negative correlation with exchangeable calcium, a significant and significant positive correlation between H 2 and exchangeable calcium, and a significantly negative correlation with free-form iron and aluminum, The tightly bound humus (H_3), which can not be leached, has no significant relationship with pH and various cements. (2) The Hg of loosely coupled humus (H_1) is lower than that of steady state humus (H_2). The former was positively correlated with free aluminum, while the latter was positively correlated with soil pH and exchangeable calcium. (3) According to the elemental composition of the eluate, it is clear that the loosely entangled state is mainly the aluminum and iron-bonded humus, but also contains a few of the calcium-bonded humus, the steady state is mainly the calcium-bonded humus