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通过对我国南方建园较早的１４个杉木种子园采集的１１２个优良家系１０年造林对比试验，结果表明，各家系生长量存在着明显的遗传差异，并呈现出随经、纬度的增大而减小的趋势。所筛选的３５个优良家系，多数出自于优良种源区。其中广西融安西山种子园参试的８个家系全部入选，生长量最大。因此，广西推广、调拔的优良家系种子、穗条、花粉应以融江河流域为主，同时可以引进靖县、锦屏等地的杉木优良家系
A comparative study on 10-year afforestation of 112 excellent families collected from 14 Chinese fir seed orchards earlier established in Southern China showed that there was a significant genetic difference in the growth of each family and showed a significant increase with the increase of latitude and longitude Big and decreasing trend. The 35 elite families screened were mostly from good provenance areas. Among them, 8 families participating in the trial of Rongan Xishan Seed Garden were all selected, with the largest growth. Therefore, the promotion of Guangxi, fine tune the transfer of family lines, spikes, pollen should Rongjiang River Basin-based, at the same time be able to introduce Jingxian, Jinping and other places of fine Chinese fir family