Contents of Main Nutrient Elements in Varied Levels of Micro-aggregates of Different Soils

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Contents of Main Nutrient Elements in Varied Levels of Micro-aggregates of Different Soils

更新时间：2024-11-07

- Contents of Main Nutrient Elements in Varied Levels of Micro-aggregates of Different Soils
- Issue 6, Pages: 122-125(2007)
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- Published：2007
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Contents of Main Nutrient Elements in Varied Levels of Micro-aggregates of Different Soils[J]. 2007, (6): 122-125.
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Contents of Main Nutrient Elements in Varied Levels of Micro-aggregates of Different Soils[J]. 2007, (6): 122-125. DOI：

摘要

为了探讨不同肥力土壤团聚体中主要营养元素含量的变化情况

以我国东部3种地带性土壤(黑土、棕壤和红壤)为研究对象

分别测定了其全量营养元素的含量

并进行了比较分析.结果发现

各营养元素在不同类型土壤中呈地带性分布.由北向南

有机碳、全氮、全磷、全钾、全钙、全镁的含量呈逐渐降低的趋势

全铁、全铝的变化趋势则相反;施用有机肥能明显增加土壤中各种营养元素的含量.无论哪个粒级的微团聚体

有机碳、全氮含量呈北高南低的趋势;钾素的变化呈北高南低分布.除了硅素外

其余营养元素在＜2 μm粒级内富集.对于不同肥力的土壤而言

各营养元素在高肥力土壤中含量较高;在不同肥力的各级团聚体中

也是主要分布在＜2 μm粒级范围内.

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