用南方建园较早的14个杉木种子园采集的112个优良家系种子育苗、造林,进行对比试验,结果表明,来自气候条件相似的、接近试验区产地的家系生长量较大。而家系产地的杉木生长量呈现出随经、纬度的增大而减小的趋势,且经度影响比纬度明显。因此,广西推广、调拨的杉木优良家系应以融江流域为主,同时引进靖县、锦屏、天柱、富顺和叙永等地杉木优良家系。 A total of 112 elite families of seedlings collected from 14 Chinese fir seed orchards in the southern garden were compared for seedling and afforestation. The results showed that the growth of families with similar climatic conditions and close to the origin of the experimental area was relatively large. However, the growth of Chinese fir originating in the family showed a decreasing trend with the increase of latitude and longitude, and the longitude effect was more obvious than that of latitude. Therefore, the promotion and allocation of good families of Chinese fir in Guangxi should be dominated by the Rongjiang River Basin, and at the same time introduce the fine Chinese fir families such as Jingxian, Jinping, Tianzhu, Fushun and Xuyong.