长白落叶松生长和材质性状早晚相关及早期选择  

EARLY-LATE CORRELATION AND EARLY SELECTION OF THE GROWTH AND WOOD TRAITS OF LARIX OLGENSIS

作　　者：张含国 李希才 袁桂华 王维臣 蒋雪斌 周显昌 潘本立 

机构地区：[1]黑龙江省林业科学研究所,哈尔滨150040 [2]黑龙江省林口县青山林场

出　　处：《东北林业大学学报》1996年第5期12-18,共7页Journal of Northeast Forestry University

基　　金：国家"八五"科技攻关项目"落叶松建筑材 ; 纸浆材良种选育"的部分内容

摘　　要：对30年生人工林90株长白落叶松(Larix olgensis)树干解析生长和材性变异及早期预测的研究结果表明:树高、胸径、材积的变异随年龄的增大而减小,14～18龄是生长变异由剧烈分化到趋向稳定的转折年龄,此时树高、胸径、材积等的幼—熟龄相关达极显著水平,选择效率也处在较高水平.确定长白落叶松早期选择年龄为:初选10a,抉选14a.基本密度和管胞长度的变异在10龄时趋于稳定,此时基本密度的幼—熟龄相关也达显著水平,选择效率处于分布的峰顶.所以,确定10龄为基本密度的最佳选择年龄.管胞长度幼—熟龄相关不稳定.90 trees of 30-year-old plantation of larix olgensis were studied in stem-analysis, variation of wood properties and early prediction. The variation ofheight, DBH and volume decreased with age growing. Age 14 - 18 is key age ofgrowth vcriation from severesy to,steadily, meanwhile the early-late correlationsof height, DBH and volume are significant (P <0. 01) and selection effciency is athigh level. The early selecting age of Larix olgensis was decided as 10 year-oldin first selecting, 14 year-old in final selecting. Variation of density and lengthof tracheid tends to being stable at age of 10, and at this time the early-latecorrelation is so significent level(p<0. 05) and selecting efficiency is at the top ofdistribution. Therefore 10 year-old was decided as best selecting age in density,and the early-late correlation of length of tracheid is not steady.

关 键 词：长白落叶松 生长变异 材性变异 早期选择 

分 类 号：S722.3[农业科学—林木遗传育种] S791.225[农业科学—林学]