摘要
１９９０年和１９９１年营造的杉木无性系测定林的树高、径粗的总体平均生长量与对照实生林的差异不大；而无性系间差异显著。从中初步选出具有显著增益的无性系３５个，平均入选率为２１．６％，其树高、胸径、材积的平均性状表现水平值达７０％以上，增益分别为２３．６７％～２３．８７％、３７．０９％～６６．２２％、１２８．９０％～１８１．４６％
The Chinese fir clonal plantations for clonal test were established at Xijiang Forestry Farm in 1990 and 1991. According to investigation data, there were no significant differences in the average growths on heights and diameters between the clonal plantations and control seedling plantation, but significant differences among the clones. 35 clones of them with appearent gains were selected as fine clones which occupied 21.6% of total. The growth gains on height, diameter and volume were 23.67%￣23.87%, 37.09￣66.22% and 128.90%￣181.46% more respectively comparing with those of the controls.
出处
《广东林业科技》
1996年第3期14-18,共5页
Forestry Science and Technology of Guangdong Province
关键词
杉木
无性系林
选择
生长量
Chinese fir, clonal plantation, selection
