基于多点解析木的长白落叶松建筑材优良种源选择  

Superior Building Timber Provenances Selection of Larix olgensis in Different Sites Based on Analytic Timber

作　　者：于宏影[1] 张含国[1] 张磊[1] 姜莹[1] 张振[1] 

机构地区：[1]林木遗传育种国家重点实验室(东北林业大学),哈尔滨150040

出　　处：《东北林业大学学报》2015年第6期10-14,共5页Journal of Northeast Forestry University

基　　金：国家科技支撑项目(2012BAD01B0102)资助

摘　　要：采用伐倒木取样的方法,对帽儿山、凉水、加格达奇3个地点31年生长白落叶松种源的生长、密度以及抗压、硬度、抗弯等14个性状进行测定,通过方差分析、主成分分析、稳定性分析等方法筛选出优良的建筑材种源。结果表明:3个地点不同种源间树高、胸径、材积差异显著,其他性状差异极显著。材积的变异系数最大,为36.43%,基本密度的变异系数最小,为10.11%。整合几种分析方法筛选出穆棱、天桥岭这两个种源为优良建筑材种源。两个优良种源的树高、胸径、材积、基本密度、气干密度、顺纹抗压强度、弦面硬度、径面硬度、抗弯强度、抗弯弹性模量的平均值为19.02 m、20.67 cm、0.320 m3、0.440 g/cm3、0.539 g/cm3、36.79 MPa、3 293.54 N、3 423.34 N、148.54 MPa、15.04 GPa,与3个地点种源平均值相比分别增产2.348%、3.261%、7.353%、1.614%、2.366%、1.589%、2.399%、1.613%、2.765%、2.566%。We studied the growth character , wood density , crushing strength , hardness , bending strength and other characters for the superior building timber provenances selection of 31-year-old Larix olgensis provenances in Maoershan , Liangshui and Jiagedaqi .After testing the felled-wood samples , we selected superior building timber provenances by variance analy-sis, multiple comparison , principal component analysis and stability analysis .The differences of tree height , DBH and tim-ber volume among families were significant , and the differences of other characters were extremely significant .The variation coefficient of timer volume was the most （36.43%） among all characters, while the wood basic density was the least （10.11%）. We selected two provenances （ Muling and Tianqiaoling ） as the superior building timber provenances .The average timber volume, basic density, crushing strength parallel to grain , the hardness of tangential section and bending strength of these two provenances were 0.320 m3, 0.440 g/cm3, 36.79 MPa, 3 293.54 N and 148.54 MPa, respectively, and they were 7.353%, 1.614%, 1.589%, 2.399%and 2.765%more than the averages, respectively.

关 键 词：长白落叶松 解析木 力学性质 建筑材 优良种源 

分 类 号：S722.5[农业科学—林木遗传育种]