The existence of primodial radionuclides in the earth’s crust causes all soils to contain some amount of radioactivity. To increase the crop production, fertilizers are extensively used, which causes further increase in the radioactivity. In order to assess the increase in radioactivity level due to fertilizer, twenty eight (28) soil samples of virgin and fertilized soils from three tehsile of district Rawalpindi, were analyzed using Gamma-Ray Spectroscopy (HPGe) technique. In virgin samples an average activity concentration of 19.04 ± 1.17 Bq kg⁻¹ for ²²⁶Ra, 32.52 ± 2.09 Bq kg⁻¹ for ²³²Th and 303.09 Bq kg⁻¹ for ⁴⁰K were found, respectively. In the fertilized soil samples activity concentrations were found to be 20.88 ± 1.28 Bq kg⁻¹ for ²²⁶Ra, 32.65 ± 2.01 Bq kg⁻¹ for ²³²Th and 332.35 Bq kg⁻¹ for ⁴⁰K, respectively. Only a minor increase in the activity concentration of fertilized samples was noted. Hazard Indices were also calculated for virgin and fertilized soil samples. In both types of samples values of the indices were found to be within permissible limits. The results obtained in current study were compared with the results for other countries

地壳中存在原始放射性核素，导致所有土壤都含有一定量的放射性。为了增加农作物的产量，广泛使用化肥，这导致放射性进一步增加。为了评估由于肥料引起的放射性水平的提高，使用伽马射线光谱法（HPGe）对来自拉瓦尔品第地区三处的原始和施肥土壤的二十八（28）个土壤样品进行了分析。在处女样品19.04±1.17公斤贝的平均活性浓度^-1为²²⁶镭，32.52±2.09公斤贝^-1为²³² Th和303.09贝千克^-1为⁴⁰分别找到了K。在受精土壤样品中发现的活性浓度为20.88±1.28公斤贝^-1为²²⁶镭，32.65±2.01公斤贝^-1为²³² Th和332.35贝千克^-1为⁴⁰ K，分别。仅观察到受精样品的活性浓度略有增加。还计算了原始和施肥土壤样品的危害指数。在这两种类型的样本中，指数值均在允许的范围内。将当前研究中获得的结果与其他国家的结果进行比较