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本文对油松两批种源(共36个)在甘肃四个试验点的生长等性状进行了观测研究。所得的资料进行单点、多点方差分析和相关分析。结果表明:种源间差异极显著,种源与立地存在一定的交互作用,种源生长与年龄呈极显著正相关,油松地理变异趋向于不连续变异的格局。经17个变量的主分量分析和各种源生态价、生产力的计算,将参试油松种源分成速生型、中生型和慢生型三类。分布在陕西、河南一带的种源适应性强,生长速度快;分布在边缘地带的种源,普遍生长缓慢。并综合选择出一批适合甘肃不同气候类型的优良种源。
In this paper, the growth and other traits of two provenances of 36 species of Pinus tabulaeformis in Gansu Province were observed and studied. The data obtained by single point, multi-point analysis of variance and correlation analysis. The results showed that there was significant difference between provenances, there was some interaction between provenances and site, provenance growth and age were extremely significant positive correlation, geographical variation of Pinus tabulaeformis tends to the pattern of discontinuous mutation. Based on the principal component analysis of 17 variables and the calculation of ecological price and productivity of various sources, the provenances of Pinus tabulaeformis were divided into three types: rapid growth, middle growth and slow growth. The provenances, distributed in Shaanxi and Henan, have strong adaptability and fast growth rate. The provenances distributed in the marginal zone generally grow slowly. And select a batch of good provenances suitable for different climate types in Gansu.