关键词: 内蒙古, 乡土杨树, 适应性, 主分量分析

Abstract:

Through comparative experiment on growth, drought resistance, cold resistance, salt resistance of several indigenous poplars in inner Mongolia, it is shown that the growths of Populus pseudo-simonii var. patula and P. platyphylla var. fiaviflora are faster; the drought resistances of P. intramongolia, P. cana and P. platyphylla var. flaviflora are stronger; the cold resistance and the salt resistance of P. platyphylla var. flaviflora, P. cana and P. hsinganica are stronger. By the method of PCA, the adaptabilities of 7 poplars in dscent order are P. pseudo-simonii var. patula, P. platyphylla var.flaviflora, P. sp, P cana, P. intra mongolia, P. platyphylla var. glauca, P, hisnganica.

Key words: Inner Mongolia, Indigenous poplars, Adaptability, PCA