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本文研究了河北省分布最广泛的潮土及潮褐土不同肥力土壤有机无机复合状况及腐殖质结合形态及其与肥力的关系。两种土壤一般为重组碳,复合量随肥力的提高而增大,随剖面深度的加深而减少。而复合度则相反,一般随肥力的提高而呈下降趋势。重组碳、复合量与全量养分和速效养分均呈极显著的正相关。因此,标志肥力的主要是土壤有机无机复合有机碳含量。故用重组碳与总有机碳结合起来评价耕作土壤肥力较为全面。土壤腐殖质结合形态,一般为紧结态为主,松结态其次,稳结态最少。但肥瘦土之间差异明显,一般随肥力的提高、熟化度的增强,松结态腐殖质增多,紧结态减少,松/紧(Ⅰ/Ⅲ)比值增大。故可用Ⅰ/Ⅲ比值作为鉴别土壤肥力特征,标志培肥效果与熟化的重要指标。
In this paper, the organic and inorganic complex and humic combination of soil and soil with different fertility in the most widely distributed Chao soil and Cinnamon soil in Hebei Province were studied. The two kinds of soils are generally recombinant carbons, and the compounding amount increases with the increase of fertility and decreases with the deepening of profile depth. The degree of compound is the opposite, generally with the increase of fertility showed a downward trend. Recombinant carbon, compound content and total nutrients and available nutrients were extremely significant positive correlation. Therefore, the flag fertility is mainly soil organic-inorganic compound organic carbon content. Therefore, the use of recombinant carbon and total organic carbon combined evaluation of tillage soil fertility is more comprehensive. Soil humus binding morphology, the general tight state-based, followed by loose state, steady state least. However, the difference between lean and lean soil is obvious. Generally, with the increase of fertility, the degree of ripening, the increase of loosely coupled humus, the decrease of tight junction and the ratio of loose / tight (Ⅰ / Ⅲ). Therefore, I / III ratio can be used to identify the characteristics of soil fertility, marking the effect of fertilization and maturity of the important indicators.