中文摘要：

与室内氡水平直接相关的是土壤潜势氡浓度（土壤中潜在的最大氡浓度）,其直接测量深度通常需数米,测量非常困难,需探索快速获得土壤潜势氡浓度的方法。本工作通过对土壤氡运移规律的深入研究,建立了一个由土壤浅层氡浓度和土壤表面氡析出率确定土壤潜势氡浓度（双源法）的理论模型,并加以实验验证。实验证明了该理论模型的可靠性。该理论模型的建立为土壤潜势氡浓度快速测量方法的进一步研究奠定了基础。

英文摘要：

The potential radon concentration in soil（the maximum radon concentration in soil） is directly related to indoor radon levels,and the depth of direct measurement normally takes up to several meters.The measurement is very difficult,and it＇s necessary to find a way to get the potential radon concentration in soil fast.In this paper,a theoretical model which can get the potential radon concentration in soil fast by taking advantage of the radon concentration in the shallow soil and the radon exhalation rate of soil surface（dual-source method） was established and verified by experiments.The results prove that this model is reliable.The establishment of this model provides a foundation for the research of fast measurement method for the potential radon concentration in soil.