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为研究山东植烟土壤腐殖质的组分及分布特征,对临朐和蒙阴典型植烟土壤的耕层和剖面各层次腐殖质组分特征进行了分析。结果表明,临朐和蒙阴土壤腐殖质碳平均含量分别为7.99和5.83 g/kg,腐殖酸碳平均含量分别为5.57和4.16 g/kg,胡富比分别为1.27、2.28。褐土性土、淋溶褐土、棕壤性土、钙质粗骨土、褐土和酸性粗骨土中的腐殖质碳含量依次递减。腐殖质含量及各组分含量随着土壤深度的降低,呈逐渐降低的趋势,从表层到中层降低幅度较大,以后降低较缓慢;土壤的胡富比在垂直方向上分布为先降低后升高,最后降低的趋势。
In order to study the composition and distribution characteristics of humus in Shandong tobacco-planting soil, the characteristics of humus composition at different tillage and section of typical tobacco-planting soil in Linli and Mengyin were analyzed. The results showed that the average contents of humus carbon in soil of Linyi and Mengyin were 7.99 and 5.83 g / kg, respectively. The average contents of humic acid carbon were 5.57 and 4.16 g / kg, respectively. The content of humus carbon in cinnamon soil, leached cinnamon soil, brown soil, calcareous coarse soil, cinnamon soil and acidic coarse rock soil decreased gradually. The content of humus and the content of each component decreased gradually with the decrease of soil depth, and decreased slowly from the surface to the middle and then decreased slowly. The distribution of soil humus ratio in the vertical direction decreased firstly and then increased , The last downward trend.