中子活化分析技术在野外红壤侵蚀研究中的应用

Application of neutron activation analysis technique for investigation on erosion of red soil in sloping fields

叙述了利用中子活化分析技术结合稳定稀土元素铕（Ｅｕ）定位土芯示踪法，在野外进行红壤侵蚀的研究，介绍了该方法的示踪原子选择、示踪用量估算、示踪实施、中子活化分析及侵蚀结果计算等要点，以及在红壤坡地雷竹园的部分应用结果。结果表明该法适用于红壤坡地的片蚀和细沟侵蚀研究。

A new method of fixed soil core Eu tracer associated with INAA technique for studies on erosion of red soil in sloping fields is described. Principles for selection and amount calculation of the tracer, the tracing and INAA procedures, the calculation of the erosion results, as well as its application in bamboo fields at sloping area are introduced. The results show that this new method is suitabls for investigating the sheet or rill erosions of red soil in sloping fields.