通过研究，运用Ｘ射线摄影技术，经浸种、培养、干燥、射线摄影，在４天内即可准确判断出华山松种子的潜在发芽能力———生活力。制作了射线判图的标准图片，确定了最佳判图条件是：２５℃浸种４８ｈ，２５℃培养４８ｈ，４０℃干燥５ｈ；判图标准是：有生活力的种子，胚及胚乳之间界线模糊不清，胚隐约可见，胚乳亮度均匀。证明了华山松种子生活力强弱与其本身干燥后失水量关系极大，发芽种子的平均失水量为１４４％，死亡种子的平均失水量是２５６％。 Through research, the use of X-ray photography, soaking, cultivation, drying, radiography, within 4 days to accurately determine the potential of Pinus armandii seed germination capacity --- viability. The standard picture of ray judgment was made. The best judgment conditions were as follows: immersion at 25 ℃ for 48h, culture at 25 ℃ for 48h and drying at 40 ℃ for 5h. The criteria of judgment were: the boundaries between viable seeds, embryos and endosperm Obscure, embryo vaguely visible, endosperm brightness uniformity. The results showed that the seed vigor of Pinus armandii had a great relationship with the water loss after drying. The average water loss of germinated seeds was 144% and that of dead seeds was 256%.