摘要
兰旗榆为白榆的一个地理生态变种,在锡盟浑善达克沙地及其南缘的镶黄旗、正镶白旗、正兰旗等地区生长表现突出。该树种较之其它的白榆品种具有抗旱、抗寒、抗风沙,物候期早,所需积温低以及生长迅速等优良特性,对我区北部干旱草原气候生态条件适应能力强,在草原造林中有着其它树种不可替代的地位和作用,建议大力推广。
Ulmus pumila L. is a geographical variety of Ulmus pumila growing in Hun-shandake sandy lands and its southern edge of Xilin Gol Prefecture. Comparsa to other species of Ulmus pumila, it has shown certain distinct features-rapid growth;less accumulated temperature needs;drought,cold,wind and sand resistance. Due to its strong adaptability to arid climatic steppe conditions,it has an irreplaceable position in grassland afforestation.
关键词
兰旗榆
半干旱草原
造林
Ulmus pumila L. (Lanqi Ulmus)
Eco-geographical variety
Steppe
