本文提出了一种新的γ—γ探头型式,该探头结构简单,测量土壤含水量与容重的结果良好。实验中对γ—γ探头的某些参数进行了实验研究,发现了δ坪曲线现象及闪烁探头与铅屏蔽体之间的距离对测量的影响,对放射源及几何位置、源室结构等也进行了实验研究。文中介绍并引伸了移动γ源式γ—γ仪方法。 In this paper, a new type of γ-γ probe is proposed. The probe has a simple structure and good results in measuring soil water content and bulk density. Some parameters of the γ-γ probe were experimentally studied in the experiment, and the effect of the δ-ping curve phenomenon and the distance between the scintillation probe and the lead shield on the measurement was found. For the radiation source, the geometric location and the structure of the source chamber An experimental study was carried out. This paper introduced and extended the mobile γ source γ-γ method.