本文讨论了 FD-71型闪烁辐射仪用于环境γ照射量率测定时的能响修正、环境因素影响和探测限等问题。FD-71受环境温度影响不大;但能响很差,若不修正,可引起+50%至+150%的误差,采用典型环境γ场刻度修正系数修正后,由能响引起的不确定度仍可达±25%;最小可探测限约为1μR/h。 This article discusses the FD-71-type scintillation radiometer used for environmental gamma irradiation rate correction, environmental factors and detection limits and other issues. FD-71 is not affected by the ambient temperature. However, it can not sound very well. If it is not corrected, it can cause an error of + 50% to + 150%. After correcting with the correction coefficient of typical ambient gamma field, the uncertainty caused by ringing The degree is still up to ± 25%; the minimum detectable limit is about 1μR / h.