【摘要】 本文对河南省110个县781个土壤样品进行三千多样次的分析.初步查明了河南省土壤中稀土元素含量和地理分布;揭示了它在各类土壤中可溶态含量水平,并初步澄清本省缺稀土的耕地土壤面积等.更多还原

【Abstract】 About 3000 analyses in 781 soil samples collected from 110 counties of Henan Province are made to determine the content and geographical distribution of rare earth elements in Henan soils.The dissolved content in various soils of rare earth elements and the provincial rare earth element deficient area become clear.更多还原