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利用评选出的云南松优良林分改建母树林，是充分挖掘现有云南松优良种质资源，获取良种的一条经济有效的途径。本文对永仁县白马河林场云南松天然优良林分改建母树林的技术措施和母树林的概况作了介绍，并对改建效果进行了初步分析。改建后的母树林树干通直度为Ⅰ级的比率由６９％提高到９６９９％，木质纹理扭率由１５３８％下降为６０％，种子千粒重提高２ｇ～３ｇ，３年生子代林树高生长量比对照提高３９２％。由此看出母树林改建效果良好；所采用的技术方法对云南松群体选择改良具有示范意义和推广价值，对其他一些松科树种群体选择和母树林改建也有一定借鉴作用。
It is an economical and effective way to fully exploit the existing high quality germplasm resources of Pinus yunnanensis and access the good seed by rebuilding the mother tree forest with the selected excellent Pinus yunnanensis stands. In this paper, the technical measures of rebuilding the native forest of Yunnan Pinus yunnanensis in the White Horse Forest Farm of Yongren County were introduced, and the general situation of the mother tree forest was introduced. The preliminary analysis of the rebuilding effect was made. After rebuilding, the trunk straightness grade I of the tree trunk increased from 69% to 96.99%, the wood texture twist rate decreased from 1538% to 60%, and the seed grain weight increased from 2g to 3g. The 3-year-old child The growth of tree height was 39.2% higher than the control. Therefore, it can be seen that the rebuilding effect of the mother tree forest is good. The technical methods adopted are of model significance and popularization value for improving the population selection of Pinus yunnanensis, and may also be used for reference to the population selection and the rebuilding of the mother tree in other Pinaceae species.