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秦岭—伏牛山区油松种源在生长及形态特征方面存在差异,在生态区内进行种源选择具有增产意义。种源高生长、生物量、抽梢能力、针叶长等性状与经度呈显著负相关。温度和水份影响种源地理变异,一月均温对种源生长及形态特征影响尤为明显。根据观测的16个性状,把参试种源分为东,西部两群。西部群的商县杨斜、商县药王坪、洛南油泉及洛南寺耳生产力最高,生产上应首先采用。
There are differences in growth and morphological characteristics of Pinus tabulaeformis provenance in Qinling-Funiu Mountain area. It is of significance to increase the yield of provenances in the ecological zone. High growth of provenances, biomass, abscission ability, length of needles and other traits and longitude showed a significant negative correlation. Temperature and moisture affected the geographical variation of provenances. The effect of January average temperature on the growth and morphological characteristics of provenances was particularly evident. According to the observed 16 traits, the test provenance is divided into two groups of east and west. Yangxian western commercial Shangxian, Shangxian Yao Wang Ping, Luonan Oil Spring and Luonan Temple ear productivity highest, the production should be the first to adopt.