4个北美树种在辽西地区的引种试验研究  

Research on the adaptability of 4 North American tree species in western Liaoning Province

作　　者：林阳[1] 步兆东[1] 

机构地区：[1]辽宁省干旱地区造林研究所,辽宁朝阳122000

出　　处：《河北林果研究》2014年第4期341-344,共4页Hebei Journal of Forestry and Orchard Research

摘　　要：为了丰富本地区的树种资源,满足园林绿化对树种多样性的需求,从物候期、生长节律及光合特性等几个方面对美洲朴、毛核木、银水牛果、西部沙樱这4个北美树种在辽西地区的引种适应性进行了研究。结果表明,4个树种的萌芽、展叶期均较北京地区有所延后,花期则提前;美洲朴未见开花坐果,银水牛果秋季叶片不变色;4个树种株高、地径、枝条的快速生长期为5—7月份,美洲朴和毛核木具有明显的越冬枯梢现象,翌年生长多以萌蘖条为主;西部沙樱和银水牛果具有较强的光合作用和较高的水分利用效率,是辽西地区园林绿化可尝试引入的优良观赏树种。Adaptability experiments of 4 North American tree species to be introduced into western Liaoning Province were carried out in this paper including the measurements of pho‐nological phase ,growth rhythm and photosynthetic characteristics .The results showed that the sprout leaves period was delayed while the anthesis period was ahead of time .Flowers and fruits of Celtis occidentalis trees were not found and the leaves of Shepherdia argentea trees did not change in autumn .The rapid growth periods of these four tree species appeared from May to July .Celtis occidentalis and Symphoricarpos sinensis .had obvious overwinte‐ring withered phenomenon ,with the tillers sprouting in quantity in the next year . Prunus besseyi and Shepherdia argentea trees had strong photosynthetic capacity and water utiliza‐tion ,which can be introduced into western Liaoning Province as fine ornamental tree spe‐cies .

关 键 词：北美树种 引种适应性 物候期 光合特性 净光合速率 

分 类 号：S792[农业科学—林木遗传育种]