CAJ | 학술논문

以尾巨桉人工林为研究对象,通过设置未修枝、轻度修枝、中度修枝和重度修枝4种修枝强度,采用裂区设计连续2年度实施人工修枝,研究修枝对尾巨桉生长动态和单板质量等级的影响。结果表明：幼林龄尾巨桉生长量受修枝强度的影响更大；随着林龄的增加,胸径生长将在生物量就近分配原则下受到影响,但修枝对树高生长的影响相对较小,这主要与修枝后林冠的高度以及叶片净光合速率有关；经2011和2012年连续实施2次人工修枝后,4种修枝强度的2013年双月连续单株材积、2013年定期单株材积基本一致；重度修枝能增加单板单位面积活节和降低单板单位面积死节,提高单板质量等级；重度修枝是综合尾巨桉生长量和单板质量等级前提下的定向培育无节材的最适宜修枝强度。
이미거안인공림위연구대상,통과설치미수지、경도수지、중도수지화중도수지4충수지강도,채용렬구설계련속2년도실시인공수지,연구수지대미거안생장동태화단판질량등급적영향。결과표명：유림령미거안생장량수수지강도적영향경대；수착림령적증가,흉경생장장재생물량취근분배원칙하수도영향,단수지대수고생장적영향상대교소,저주요여수지후림관적고도이급협편정광합속솔유관；경2011화2012년련속실시2차인공수지후,4충수지강도적2013년쌍월련속단주재적、2013년정기단주재적기본일치；중도수지능증가단판단위면적활절화강저단판단위면적사절,제고단판질량등급；중도수지시종합미거안생장량화단판질량등급전제하적정향배육무절재적최괄의수지강도。
Using Eucalyptus urophyllaíE. grandis plantation as the research material in this paper, the effects of pruning on the growth dynamic and veneer quality were studied by setting four pruning intensities of CK ( no pruning) , light pruning ( cut 25% of the whole canopy ) , moderate pruning ( cut 33.3% of the whole canopy) and heavy pruning ( cut 50% of the whole canopy) , and pruning in consecutive 2 years with applying split-plot experiment design. The results showed that the growth of young E. urophyllaíE. grandis was most influenced by pruning intensity, especially with the increasing of trees age. The increase of diameter at breast height ( DBH ) was affected under the principle of nearby allocation of biomass;however the growing on the height of tree was affected quite less than that for DBH. The reason of this phenomenon was mainly related to the height of canopy and net photosynthetic rate after pruning. The tree volumes for both bi-monthly continuous and regular growth in 2013 were nearly the same under four pruning intensities after two consecutive pruning in 2011 and 2012 . The veneer quality was improved by the heavy pruning, which was able to increase green knots and decrease dead knots per unit area. The heavy pruning is most appropriate method for directive breeding of clear wood based on the growth and veneer quality of E. urophyllaíE. grandis.