论文部分内容阅读
用中子活化法（ＩＮＡＡ）测定了黄土高原地区主要类型土壤（表层）１０４个样品中８个稀土元素（Ｌａ，Ｃｅ，Ｎｄ，Ｓｍ，Ｅｕ，Ｔｂ，Ｙｂ，Ｌｕ），初步探讨了该区土壤中稀土元素的区域分布及对稀土农用效果的影响。结果表明，黄土高原土壤中稀土元素的含量接近全国土壤中的平均含量：主要类型土壤的稀土元素含量分布规律为：灰褐土，娄土＞黑垆土，黄绵土＞灰钙土，与土壤粘粒含量相似，由东南向西北呈下降趋势：该区较适合于农用稀土的推广应用。
The contents of eight rare earth elements (La, Ce, Nd, Sm, Eu, Tb, Yb and Lu) in 104 samples of the main soil samples from the Loess Plateau were determined by neutron activation (INAA) Regional distribution of rare earth elements in soil and its effect on rare earth agricultural effects. The results showed that the content of rare earth elements in the soil of the Loess Plateau was close to the average content in the soil of the whole country. The content of rare earth elements in the main types of soils distributed as follows: gray-brown soil, Lou soil> black soil, loessial soil> Grain content is similar, from the southeast to the northwest downward trend: This area is more suitable for the promotion and application of agricultural rare earth.