用 X 光照像鉴定种子贸量的方法是瑞典林业科学研究所试验成功的。其方法就是用按有特殊装备的小型 X光照像机(这个装备是为了减少 X 光照射量,以保证种子不受损害)给种子照像。用作试验的树种有松树、云杉、落叶松、白桦和黑赤杨。1.从底片和照片上可以观察种子形态和解剖结构,特别是种胚和胚乳的情况。根据种胚发育情况,可以马上确定新摘下来的和未受损害的种子 The method of identifying seed trade by X-ray photography was successfully tested by the Swedish Institute of Forestry Sciences. The method is to use a specially equipped small X-ray camera (this equipment is to reduce the amount of X-rays to ensure the seeds are not damaged) to seed photography. The species used for the experiment were pine, spruce, larch, white birch and black alder. 1. The morphology and anatomy of the seed, especially the embryo and endosperm, can be observed from the film and photos. Depending on the embryo development, newly picked and undamaged seeds can be identified immediately