桉树是重要速生用材树种。近年来,我县先后从省内外引入十多种桉树进行多点试种,由于这些桉树具有生长迅速、树干通直、适应性广、萌蘖力强、容易繁殖的特点,深受广大群众喜爱。目前,从生长情况看:直干兰桉(Eucalyptus maideniF.V.M)、双肋桉(E.bicostata Maiden)和健康桉较有希望,是值得重视发展的速生良种。直干兰桉是云南省植物研究所首先由 Eucalyptus is an important species of fast-growing timber. In recent years, our county has introduced more than ten species of eucalyptus from the inside and outside the province for multi-point cultivation. Because these eucalypts have the characteristics of rapid growth, trunk straightness, wide adaptability, strong sprouting ability and easy reproduction, they are favored by the masses . At present, from the perspective of growth, Eucalyptus maideniF.V.M, E. bicostata Maiden and Eucalyptus urophylla are more promising and are fast-growing elite species worthy of attention. Direct dry Eucalyptus Yunnan Institute of Botany by the first