裂叶榆(Ulmus laciniata Mayr.)落叶乔木,高达10m,是东北地区优良用材树种之一,木材用途广,经济价值高,是家俱、车辆、农具、建筑等珍贵材种,但多年来由于保护不佳,中、成龄树木乱砍滥伐,资源面临枯竭。裂叶榆种子5月末至6月初成熟,采种困难,育苗技术性强,种子虽属短期休眠,但不经催芽,在自然条件下很难发 Ulmus laciniata Mayr. Deciduous tree, up to 10m, is one of the fine wood species in Northeast China. It is widely used in timber and has high economic value. It is a rare species such as furniture, vehicles, farm implements and construction. However, Poor, middle-aged trees deforestation, depletion of resources. Cracked Elm seeds mature from late May to early June, seed production difficulties, seedling strong technical, although the seeds are short-term dormancy, but without germination, difficult to make in natural conditions