摘要
以雷公藤人工同龄林为选择群体,以枝数量、地径、平均藤径、平均藤长为选优性状,采用小样地调查方法并用指数选优法进行雷公藤优良单株选择,研究结果表明：雷公藤选优的合理对比株数量为16株;雷公藤枝数量、地径、平均藤长、平均藤径选优标准的性状比分别为1.5,1.45,1.45,1.85;通过多性状联合选择,从36株候选株中选出23个优良单株,入选率为1.05%,选择强度为1.388 9-1.756 2,优良单株各生长性状为林分平均水平的1.47-1.8倍.
Using the manmade even-aged stand of Tripterygium wilfordii Hook as selected group,and the number of trees,ground diameter,average diameter of main bine,average length of bine as selection traits, combining the small sample plot method and the index selection method,the selection of the superior individual tree of Tripterygium wilfordii Hook was studied. The results showed that the reasonable compared strain numbers of the selection of superior trees of Tripterygium wilfordii Hook were 16 ;the selection criteria of the number of trees of Tripterygium wilfordii Hook were 1.5 times,the selection criteria of ground diameter was 1.45 times, and the selection criteria of average diameter of main bine was 1.45 times,and the selection criteria of average length of bine was I. 85. By jointing the selection of multiple characters,there were 23 superior individual trees selected from 36 candidates, which selection rate was 1.05%. The selection intensity were 1. 388 9 - 1. 756 2. Each growth trait of superior individual tree were 1.47 - 1.8 times of the average stands level.
出处
《北华大学学报（自然科学版）》
CAS
2008年第6期535-539,共5页
Journal of Beihua University（Natural Science）
基金
福建省科技重大专项资助项目(2006NZ0001)
教育部博士学科点专项基金资助项目(200503890001)
关键词
雷公藤
优树选择
选择标准
Tripterygium wilfordii Hook
Selection of superior individual tree
Selection criteria
