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根据东部型14个种源在苗期阶段的生长、形态、抗性等方面的特征,利用方差分析及多变最统计技术对生态型内部各种源的变异进行了分析.结果表明,东部型内部各种源在生长及生物最方面均存在极显著差异,但在绝大多数形态特征和适应性方面差异不显著.在生态型内部进行种源选择对提高油松生产力仍具有重要意义.根据主分量分析结果,将东部型划分为北部、中部及东部三个亚区.中部亚区的种源在北京具有较高的生产力.
Based on the characteristics of growth, morphology and resistance of 14 eastern provenances at seedling stage, the variances of various sources within ecotypes were analyzed by analysis of variance and the most variable techniques. The results showed that the eastern type There were significant differences in growth and biological aspects among all kinds of internal sources, but there was no significant difference in the majority of morphological characteristics and adaptability.The selection of provenances in ecotypes was still significant to improve the productivity of Pinus tabulaeformis As a result of the principal component analysis, the eastern type is divided into three sub-regions: the northern, central and eastern sub-regions, and the provenance of Central Asia is highly productive in Beijing.