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对云南松母树林后代（５个种源８１个家系）苗期生长的分期观测及研究结果表明：云南松苗期生长可分为４个时期，即火柴柱形期（Ⅰ期）、灯笼形期（Ⅱ期）、伞形前期（Ⅲ期）和伞形后期（Ⅳ期）；苗木营养器官的生长发育只有一定的阶段性；种子的大小及发芽率与苗木的生长关系不明显；苗木大多数性状在家系内差异不明显，在家系间和种源间则存在显著的差异；苗期以滇东南和川西南种源的生长量和生物量较大，滇中和滇西种源次之，对照的最小。
The staging observation and the results of the seedling growth of Pinus yunnanensis progenies (5 families and 81 pedigrees) showed that the growth of Pinus yunnanensis seedlings could be divided into 4 periods: the match stage (stage Ⅰ), lantern stage (Stage Ⅱ), early stage of pachyrhizus (stage Ⅲ) and late stage of pachyrhizus (stage Ⅳ). The growth and development of vegetative organs of seedlings had only a certain stage. The relationship between seed size and germination rate and seedling growth was not obvious. There was no significant difference in pedigree between pedigrees and provenances, but there was significant difference between pedigrees and provenances. The growth and biomass of southeastern Yunnan and southwestern Sichuan were larger in seedling stage, followed by the provenances in middle and western Yunnan, Control of the smallest.