论文部分内容阅读
兴安落叶松(larix gmelini litvin)是黑龙江省的主要造林树种之一,通过多年实际考察发现,自然条件下该树种的形态特征变异,与树木的经济性状有一定的相关。据此,我们于六十年代在黑龙江省东风林业局进行了此项调查研究。目前在20—30年生的兴安落叶松人工林内,也观察到树木形态特征与天然林相似的变异,为给进一步开展兴安落叶松的选育工作提供依据,有必要对过去的调查结果加以总结。一、形态特征的变异与经济性状的相关性
Larch (Larix gmelini litvin) is one of the main afforestation species in Heilongjiang Province. Through years of practical investigation, it has been found that the variation of morphological characteristics of the tree species under natural conditions is related to the economic traits of the trees. Accordingly, we carried out this investigation in Dongfeng Forestry Bureau of Heilongjiang Province in the 1960s. At present, in the larch plantations of Larch (20-30 years old), similar morphological variations of natural forests are observed. It is necessary to summarize the findings of the past surveys in order to provide a basis for further breeding of Larix gmelinii. First, the morphological variation and economic traits relevance