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为了尽快建立油松种子基地,积极开展油松选优和良种繁育工作,我们于1947年7月29日至8月23日在乔山林业局所辖的建庄、店头、上畛子、双龙林场进行了油松选优工作,初选优树93株。选优方法是根据1973年省农林局组织的母树林、种子园试点学习班总结的油松优良单株选择原则、方法、步骤进行的,并参照了黄龙山林区油松
In order to set up the pine seed base as soon as possible, and actively carry out the excellent selection of oilseeds and breeding of breeding seeds, we were in July 29, 1947 to August 23 in the Qiaoshan Forestry Bureau under the jurisdiction of Zhuang, shop head, Ssangyong Forestry conducted pine elite work, 93 primaries tree. The optimal selection method is based on the principles, methods and steps for the selection of excellent individuals of Chinese pine (Pinus tabulaeformis), which are summarized in the pilot study classes of mother trees and seed orchards organized by the Provincial Department of Agriculture and Forestry in 1973. Reference is made to the analysis of Pinus tabulaeformis