中文摘要：

探地雷达（GPR）是一个采用微波技术对地下目标进行无损探测的技术，试验旨在揭示复垦土壤在多盐分及多重金属污染条件下，不同水分系列对探地雷达的影响程度，试验采用中心频率为400MHz的天线。GPR探测的体积水分含量与烘干法存在较大的误差，在体积水分含量达到40％左右，二者的测量值非常接近，随着水分含量的降低，误差增大。GPR探测的体积水分含量、复垦土壤电导率、复垦土壤孔隙度密切相关。通过拟合，建立了复垦土壤体积水分含量的数学模型。能够提供实时的大田规模土壤水分数据，解决了复垦田块有效灌溉管理关键技术。

英文摘要：

Ground Penetrating Radar （GPR） is an instrument that is used for nondestructive detection for underground objects by microwave technique. This paper aims to reveal GPR signal variation while detec- ting reclamation soil moisture respectively under multi-saline matter and multi-heavy metal soil conditions. The experiment is conducted by adopting antenna with center frequency of 400 MHz. The volumetric wa- ter contents detected by GPR and Oven Drying Method （ODM） are very approximate when they are around forty percent, error increasing with water contents decreasing. The VWC （Volumetric Water Content）, reclamation soil conductivity and porosity detected by GPR show a close correlation with each other. By fitting, the reclamation soil VWC mathematical model is established, which can give real-time soil mois- ture data on large field scale and reclamation field effective irrigation management.