景观植物-榆树-Ulmus pumila L.--紫天网|设计产业互联网站
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描述

榆树(学名:Ulmus pumila L.)是榆科、榆属植物,素有“榆木疙瘩”之称,为榆科落叶乔木,幼树树皮平滑,灰褐色或浅灰色,大树之皮暗灰色,不规则深纵裂,粗糙;小枝无毛或有毛,无膨大的木栓层及凸起的木栓翅;冬芽近球形或卵圆形。叶椭圆状卵形等,叶面平滑无毛,叶背幼时有短柔毛,后变无毛或部分脉腋有簇生毛,叶柄面有短柔毛。花先叶开放,在生枝的叶腋成簇生状。翅果稀倒卵状圆形。花果期3-6月(东北较晚)。 

分布于中国、朝鲜、韩国、吉尔吉斯斯坦、俄罗斯、土库曼斯坦、蒙古等地;在中国分布于东北、华北、西北及西南各省区。生于海拔1000-2500米以下之山坡、山谷、川地、丘陵及沙岗等处。中国长江下游各省有栽培,也为华北及淮北平原农村的习见树木。

榆树抗风耐碱性强,是一种很好的造林及园林树种,在中国北方作为行道树、防风林、庭院绿化以及“四旁”绿化的主要树种之一。在干旱、严寒地区常作为灌木栽植,当作绿篱使用。该树老茎残根萌芽能力很强,可以在野外采集老榆树桩制作盆景。榆树木材坚韧,不易劈裂,稍耐腐,是很好的建筑、车辆、矿柱、枕木、家具、农具等用材。树皮纤维坚韧,是造纸和人造纤维的原料,嫩叶、鲜果可食用,也可作饲料。果、树皮、叶均可入药,有安神助眠作用。种子含油率25.5%,可榨油供食用、工业用。

形态特征

落叶乔木,高达25米,胸径1米,在干瘠之地长成灌木状;幼树树皮平滑,灰褐色或浅灰色,大树之皮暗灰色,不规则深纵裂,粗糙;小无毛或有毛,淡黄灰色、淡褐灰色或灰色,稀淡褐黄色或黄色,有散生皮孔,无膨大的木栓层及凸起的木栓翅;冬芽近球形或卵圆形,芽鳞背面无毛,内层芽鳞的边缘具白色长柔毛。叶椭圆状卵形、长卵形、椭圆状披针形或卵状披针形,长2-8厘米,宽1.2-3.5厘米,先端渐尖或长渐尖,基部偏斜或近对称,一侧楔形至圆,另一侧圆至半心脏形,叶面平滑无毛,背幼时有短柔毛,后变无毛或部分脉腋有簇生毛,边缘具重锯齿或单锯齿,侧脉每边9-16条,叶柄长4-10毫米,通常仅上面有短柔毛。 [2] 

花先叶开放,在生枝的叶腋成簇生状。翅果近圆形,稀倒卵状圆形,长1.2-2厘米,除顶端缺口柱头面被毛外,余处无毛,果核部分位于翅果的中部,上端不接近或接近缺口,成熟前后其色与果翅相同,初淡绿色,后白黄色,宿存花被无毛,4浅裂,裂片边缘有毛,果梗较花被为短,长1-2毫米,被(或稀无)短柔毛。花果期3-6月(东北较晚)。

寓意

1、榆树的主要价值

榆树种植完成之后的主要作用就是作为绿化观赏使用,可以种植在多种环境下都是没有问题的,生长效果比较好,同时还能够作为家具,车辆,农具,桥梁,建筑等等的用料使用。

2、榆树的开花时间

榆树在种植完成之后的花果期时间是每年的3月份到6月份,如果在东北地区种植的话,时间会有所延长。

3、榆树的种植环境

榆树对种植率没有明显的要求,在多种环境下都能够种植使用,成活率是非常高的,对环境适应能力也比较强,比较的喜欢阳光通风性良好的地方。



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如果需要植物采购可以联系,电话15889638076也可以去客服官方淘宝店铺和微信公众号,随时欢迎家联系。真实植物购买、设计、养护联系客服。Dieffenbachia picta Lodd Also known as Dai fenye, it is an evergreen shrub like herb with thick and fleshy stems and a plant height of 1.5m. There are many horticultural varieties, and the patterns on the leaves of different varieties are different. Like warm, humid and semi cloudy environment. Not resistant to cold and drought. Conventional propagation is usually divided into plants and cuttings, but mainly cuttings. Native to South America. It is widely cultivated in tropical cities of Guangdong and Fujian in China. Young plants and small potted plants can be placed on the desk and windowsill for viewing. Medium sized potted plants can be placed in the corner of the living room and the edge of the sofa as decoration, making the room full of natural vitality. When it is used to place public places with low brightness, evergreen flowers and leaves still grow normally and green leaves.

The moral of evergreen flowers and leaves

"Evergreen flowers and leaves" is a warm and cheerful person. Because its leaves are bright and vigorous, it will give people a clear and lively feeling. It is suitable for giving it to their friends, colleagues or     people who encounter setbacks. It represents the hope that the other party can face everything bravely. It can be placed indoors during maintenance.

2. Health and longevity: evergreen flowers and leaves is a kind of evergreen, which can be heard from its name. The leaves always remain emerald green and look vibrant, implying health and longevity. I hope people can always be healthy and free from disease. Evergreen flowers and leaves is very suitable for the elderly at home. I wish the elderly health and longevity, longevity, eternal health and youth.

3. Auspiciousness and wishfulness: Although evergreen is a foliage plant, it can also blossom. Its flowering is relatively rare, and the moral is also very good. It symbolizes that it can bring good luck. It can be placed at home and carefully maintained to promote flowering, which is a good omen.
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2022.9.19

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