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林木生长期长,在什么年龄阶段开始选择合适,这不单是优良个体利用问题,而且直接关系到后代林木的增产问题。目前对林木选优年龄的看法不一,认为林木生长期长,年龄小生长不稳定,主张在较大或成熟的林分中选择;其二认为也可以早一点选择。为了满足林木良种基地建设的需要,充分利用现有森林资源,提供高质量的优树,我们对红松选择年龄进行研究,提出如下看法。
Trees grow long, at what age to start the right choice, which is not only an issue of good individual use, but also directly related to future generations of trees yield increase. At present, the opinions on the optimal age of forest trees are different. They think that the growth period of forest trees is long and the growth of small age is unstable. They are advocated to choose among the larger or mature stands; the second is that they can choose earlier. In order to meet the needs of forest seed base construction, to make full use of existing forest resources, to provide high-quality trees, we study the age of selection of Korean pine, put forward the following view.