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为准确评定油松各生态型差异,提高种源选择可靠性,采用生态适应性指数对油松全分布区种源多点试验中的北京试点11年生林分的生长、适应性、结实习性等进行测定分析。分析结果表明,各种源生长量差异很大,好与差高生长差50%,胸径差120%。油松的遗传分化遵从生态型变异的格局,北京地区用东部型种源造林最适宜,其次可选用东北型宁城种源造林,其余种源不宜采用。
In order to accurately evaluate the ecotype differences of Pinus tabulaeformis and improve the reliability of provenance selection, the ecological adaptability index was used to study the growth, adaptability and stamina habit of 11-year-old stands of Beijing pilot in the provenance multi-point experiment Analysis of the measurement. The results show that the growth of various sources vary greatly, good and poor high growth difference of 50%, DBH difference of 120%. The genetic differentiation of Pinus tabulaeformis follows the pattern of ecotype variation. Afforestation with eastern provenance is most suitable in Beijing, followed by northeast Ningcheng provenance, and the rest of the provenances should not be used.