高寒地区欧洲赤松引种苗期试验及早期评价

Introduction trials during seedlings period and early evaluation of young Pinus sylvestris in the cold area

欧洲赤松具有广泛分布和较大生态幅,适应多种类型土壤。引种栽培结果表明:在我国高寒地区,欧洲赤松生长节律与樟子松基本一致,群体间子代苗高、针叶长度和针叶数量3个性状相关程度紧密,生长较快,子代的针叶较长、数量较多。群体间子代地径性状差异显著,苗高性状差异极显著;群体内地径性状变异较小、苗高性状变异较大,平均变异系数分别为29.94%、42.59%。综合考虑群体间苗期生长状况、生长适应性及定植子代地径和苗高2个性状的遗传和变异,筛选出CT、FL2优良群体2个。

The distribution and ecological breadth of Pinus sylvestris were comparatively broad, and it may adapt to various kinds soil. The results of introduction and cultivation show that the growth rhythm of P. sylvestris was consistent with that of P. sylvesris, var. mongolica. The height of seedlings, length of leaves, quantity of leaves were closely related among population progeny. There were longer needles and more leaves on the progeny of quick growth population. The ground diameter traits were significant difference and the seedlings height traits were extremely significant difference between population progeny. The variations of the ground diameter was slightly and the variations of the seedlings height was large within population progeny, and the average variation coefficient was 29.94% and 42.59%, respectively. The superior populations were selected as CT and FL2 population by synthetically estimated the index on growth traits, adaptability and the variation of ground diameter and seedlings height in cultivated progeny.