河北省石灰性土壤中锰的形态研究

Research on Soil Microelements: Forms of Manganese in Calcarious Soils

本文应用分组的方法,研究土壤中锰的形态分布,将河北省20种土壤表层的全锰分为代换态、碳酸盐结合态、氧化物结合态、有机质结合态和残渣态锰,其平均含量分别为2.71ppm、75.04ppm、115.5ppm、14.50ppm和118.5ppm.土壤pH值、碳酸盐含量、有机质含量以及土壤颗粒大小,均对土壤锰的形态分布有重要影响.其结果有助于弄清锰的土壤化学和土壤锰素营养.

The fractionation method was used to study the form distribution of soil manganese. Total Mn of 20 Soils in Hebei Province was fractionated into exchangeable, carbonata bound, oxide bound, organic matter bound and residual form, and the average contents are 2.71ppm, 75.04ppm,115.5ppm, 14.50ppm and 118.5ppm respectively. Soil properties (soil pH, organic matter content, carbonate content and particle size) have important influence on form distribution of soil Mn. The results are helpful for understanding the chemistry and nutrition of soil manganese.