土壤有效态微量元素含量与不同地貌单元关系的研究─—以河南省新乡地区卫辉市和辉县市为例

选择上自太行山下至黄河故道的一个具有不同地貌类型的典型区域，研究了土壤中６种对植物生长发育必需的微量元素有效态含量与地貌变化的关系。水溶态硼随地形下降而含量增加；易还原态锰含量与地形高低呈一致变化；钼含量以山地及低地最低；锌含量多偏低；铜在不同地貌土壤中的含量均在中等以上。

Relationship of the Contents of Available Trace Elements in Soil to Topographical Units: A Case Study in the Weihui City and Huixian City of the Xinxiang Prefecture, Henan Province

A typical region with various types of topography extended from the Taihang Mountains to the ancient course of the Yellow River was selected to study the relationship between the contents of the available species of six trace elements in soil, which were essential for plants to grow, and the topographical changes. The results show that the level of water soluble boron species in soil was increasing with the topography dropping; the level of easily reducible manganese species changed in consistence with the topography;the level of molybdenum species was the lowest in mountainous areas and lowlands; the level of zine was generally lower in most areas; and the level of copper was middle or higher in all the soils of various topographies. The results obtained provide a scientific basis for the application of trace elements fertilizers to soil and the studies to find the causes for abundance or deficiency of various elements in different topographies.