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分析研究白浆土、黑土和草甸土三类土壤不同形态铁和无定形硅铝表明,游离氧化铁的量在各类土中均为表层大于底层;铁的活化度白浆土高于黑土,而白浆土的白浆层又高于腐殖质层和淀积层;无定形硅、铝在白装土中层次之间分异明显,说明有淋淀现象发生,在黑土和草甸土中差异不大;新鲜有机质对铁的活化有显著作用,络合态铁和土壤腐殖质含量呈明显的正相关。
Analysis of white soil, black soil and meadow soil three types of soil different forms of iron and amorphous silica shows that the amount of free iron oxide in all types of soil surface layer is greater than the bottom; iron activation degree of white soil higher than black soil , While the white pulp layer of white soil is higher than the humus layer and sedimentary layer; amorphous silicon, aluminum in the white soil were significantly different levels, indicating that the phenomenon of precipitation in the black soil and meadow soil The difference was not significant. Fresh organic matter had a significant effect on the activation of iron, and the content of chelated iron and soil humus had a significant positive correlation.