一、引言紫杉又名红豆杉(Taxus cuspidata)属紫杉科紫杉属,东北仅有一属一种。常绿乔木,树形优美,抗性强,病虫害极少,是盆景和庭园绿化的优良材料,是城市绿化很有发展前途的树种。紫杉生长缓慢,远不能适应城市绿化建设的需要,为了加快城市绿化步伐,努力增加城市常绿树种,尽快培育紫杉苗木。为此, I. Introduction Taxus aka Taxus (Taxus cuspidata) is a genus Taxus genus, only one genus in northeast China. Evergreen trees, beautiful tree shape, strong resistance, minimal pests and diseases, bonsai and landscaping is an excellent material, is a promising urban tree species. Yew tree growth is slow, far from being able to meet the needs of urban greening, in order to speed up the pace of urban greening, efforts to increase urban evergreen species, as soon as possible to cultivate yew seedlings. to this end,