凉水地区长白落叶松纸浆材优良种源选择

Superior Pulpwood Provenance Selection of Larix olgensis in Liangshui, Heilongjiang Province

以黑龙江省伊春市带岭区的凉水实验林场31年生的长白落叶松作为研究对象,测定了生长性状(树高、胸径、材积)、基本密度、化学成分(纤维素质量分数、半纤维素质量分数、木质素质量分数)等共计7个指标。并运用SPSS 18.0分析软件估算了各性状的变异系数,相关系数,以筛选出生长和材性好的优良种源。结果显示:材积、基本密度存在丰富的变异,相应的变异系数分别为16.45%、10.72%。树高、胸径、纤维素质量分数、半纤维素质量分数、木质素质量分数的变异相对较小,均小于10%。树高、胸径与材积呈显著或极显著正相关关系,胸径、材积和木质素质量分数呈极显著负相关关系。半纤维素质量分数和木质素质量分数呈极显著正相关关系。其他性状之间的相关性不显著。选择鸡西、白刀山、穆棱作为优良种源。

The tree height,DBH,timber volume,wood density,cellulose content,hemicellulose content,lignincontent were analyzed for the superior provenances selection of 31-year-old Larix olgensis provenances sited in Liangshui. To select superior provenances,we analysis the data by SPSS18.0 to estimate the variation coefficient and correlationcoefficient. The results showed that timber volume (16.45%) and wood density (10.72%) has rich variation,whilethe other characters were less than 10%. The results showed that the correlation between tree height,DBH and timbervolume among families were significant or extremely significant and positively correlated. The DBH,timber volume is verysignificantly and negatively correlated with lignin content. The correlation with hemicellulose content and lignin content ispositively significant. The correlation among other chararters is not significant. Jixi,Bai Daoshan and Muling were selectedas the superior provenances.