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首页> 外文期刊>Geoderma: An International Journal of Soil Science >Pedospheric attributes in distribution of total and DTPA-extractable Zn, Cu, Mn and Fe in Indo-Gangetic plains.
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Pedospheric attributes in distribution of total and DTPA-extractable Zn, Cu, Mn and Fe in Indo-Gangetic plains.

机译：印度洋恒河平原中总和DTPA可提取的锌，铜，锰和铁的分布中的圈层属性。

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摘要

The benchmark soils of the Indo-Gangetic plains show wide variability with respect to climate, profile development, and soil processes. Their relationships with the spatial distribution of reserve and available micronutrients (Zn, Cu, Fe, and Mn) were sought. For this, samples were drawn from genetic horizons of 20 benchmark profiles and total, diethylenetriamine penta-acetic acid (DTPA)-extractable micronutrients (Zn, Cu, Fe, and Mn) were determined. The total content varied from 23 to 99 mgthinkg-1 for Zn, from 10 to 64 mgthinkg-1 for Cu, from 1.5% to 4.5% for Fe, and from 169 to 627 mgthinkg-1 for Mn. These micronutrients reside in the finer fractions and content is high in aquic moisture regime, moderate in ustic moisture regime, and low in aridic moisture regime. Except in soils with fluventic or vertic properties, content of total Cu, Fe, and Mn followed the patterns of eluviation, illuviation, and leaching. Total Zn, on the other hand, had a close association with organic carbon content. The available micronutrient contents depended largely on organic carbon content. The correlation between total amounts of Cu, Fe, and Mn suggested that they occurred together. Although the US Soil Taxonomy is a morpho-genetic classification, its groupingscould not explain the spatial distribution of Zn, Cu, Fe, and Mn.
机译：印度-恒河平原的基准土壤在气候，剖面发育和土壤过程方面表现出很大的变化性。寻找它们与储备和可用微量营养素（锌，铜，铁和锰）的空间分布的关系。为此，从20个基准配置文件的遗传视野中抽取样品，并确定了可从二亚乙基三胺五乙酸（DTPA）中提取的微量营养素（锌，铜，铁和锰）。锌的总含量为23至99 mgthinkg-1，铜的总含量为10至64 mgthinkg-1，铁的含量为1.5％至4.5％，锰的含量为169至627 mgthinkg-1。这些微量营养元素存在于较细的级分中，含水量高的水分含量高，ustic水分高的含量中等，而干旱水分低。除了在具有流动性或垂直性的土壤中，总铜，铁和锰的含量均遵循洗脱，浸润和浸出的模式。另一方面，总锌与有机碳含量密切相关。有效微量营养素含量主要取决于有机碳含量。 Cu，Fe和Mn总量之间的相关性表明它们一起出现。尽管美国土壤分类法是一种形态发生分类，但其分组不能解释锌，铜，铁和锰的空间分布。

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