推荐回答(3个)
1.说起垂柳大家应该都知道,具有不错的观赏价值并且广泛应用于园林绿化建设中,所以对于垂柳大家都是非常的熟悉。而对于杨柳却知道的很少,因为杨柳没有具体的植物特征,比如说旱柳、腺柳、垂柳等等都可以说是杨柳,而在古代杨柳常常单指柳树,而国内众多柳树品种都可以称之为杨柳,所以杨柳和垂柳的关系用简单一点的比喻就是水果与香蕉的关系,一个指的是总体而另一个单指一种植物。
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2.所以说不管是垂柳还是杨柳都是柳树的一种,垂柳也可以称为柳树,是落叶乔木,在天气寒冷时树叶会逐渐变黄慢慢掉落留下光秃秃的树枝。所以如果在生活中在有人问你杨柳和柳树的区别是什么,你可以告诉他它们都是柳树的品种,而柳树也可以成为杨柳。
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3.不管是杨柳哪个品种都具有不错的园林绿化建设作用,尤其是在公园、庭院、风景区等等地方都会看见杨柳,可有孤植也可以选择成片种植,只需要注意好种植间距就可以。
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4.看到这里我想大家应该不会在问杨柳和垂柳的区别,因为杨柳既可以说是垂柳又可以说是别的柳树品种,在国内柳树的品种有很多在这里小编就不为大家一一介绍,只能在这里告诉大家垂柳同样可以被称为杨柳,所以在生活中不要在问杨柳和垂柳之间的区别了。
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垂 柳 Salix babylonica Linn.
英名:Babylon Weeping Willow, Weeping Willow
科名:杨柳科 Salicaceae 杨属
别名:垂丝柳、垂杨柳 、倒垂柳 、倒栽柳 、柳树 、清明柳 、水柳 、弱柳 ;
形态特征:落叶乔木,小枝细长,下垂,淡紫绿色或褐绿色,无毛或幼时有毛。叶狭披针形或线状披针形,顶端渐尖,基部楔形,有时歪斜,边缘有细锯齿,无毛或幼时有柔毛,背面带白色;叶柄长6—12毫米,有短柔毛。花序轴有短柔毛;雄花序长2—4厘米,苞片长圆形,背面有较密的柔毛,雄蕊2,基部微有毛,腺体2;雌花序长1.5—2.5厘米,雌花腺体1,子房无毛,柱头4裂。蒴果黄褐色,长3—4毫米。花期4月。
生态习性 :喜温暖至高温,日照要充足。冬季落叶后可修剪、整枝。耐旱,耐水湿,为 湿生阳性树种。喜生于河岸两旁湿地,短期水淹及顶不致死亡。高燥地及石灰质土壤也能适应。发芽早,落叶迟,生长快速,但不及旱柳耐寒。寿命短,30年后渐趋衰老。
繁殖与栽培:常用扦插繁殖,可以保持母树的优良特点 。以扦插繁殖为主,也可播种育苗。扦插于早春进行,选择生长快、病虫少的优良植株作为采条母树,在萌芽前剪取2~3年生枝条,截成15~17厘米长作插穗。扦插株行距20×30厘米,直插,插后充分浇水,经常保持土壤湿润,及时抹芽和除草,发根后施追肥3~4次,幼苗易受象鼻虫、蚜虫、柳叶甲为害。播种育苗于4月采收种子,随采随播。种子千粒重0.4克,发芽率70~80%,亩播种约0.25公斤,当年苗高80~100厘米。移植宜在冬季落叶后至翌年早春芽未萌动前进行,栽后要充分浇水并立支柱。
病虫害:星天牛、光肩星天牛蛀食枝干,大蓑蛾、刺蛾、李叶甲、柳叶甲、蚱蝉等为害枝叶。柳叶甲可在4~6月为害期以敌百虫800倍或辛硫磷1000倍喷杀。还有绿尾大蚕蛾为害叶片,防治同雪柳。
观赏特性及园林用途:姿态婆娑,清丽潇洒,适于配植于池边湖岸,如间植花桃,则绿丝婀娜,红枝招展,尤为我国江南园林中的春景特色。 适应性强,树形优美,多作庭园绿化树种。对二氧化硫、氯气等抗性弱,受害后有落叶和枯梢现象,不宜栽植于大气污染地区。树皮含鞣质;材质较旱柳差,可作器具和造纸原料;柳絮可填塞椅垫和枕头;枝和须根能祛风除湿。诗中有云:无心插柳柳成荫。说明,柳树极易成活。 河柳枝皮的纤维可作纺织及绳索原料;枝条可编织提篮、抬筐、柳条箱及安全帽等。木材色白,韧性大。可作小农具、小器具与烧制木炭用。
旱柳
习性特征: 为落叶乔木,高约30m,树冠圆球形,树皮灰褐色,分枝较多,无明显的主干。奇数羽状复叶互生,小叶13-25枚,卵状披斜形至椭圆状披针形。全缘,圆锥花序顶生,翅果扁平,褐黄色,幼时稍带红晕。分布于中国黄河下游地区。喜光、耐寒、耐旱、耐瘠薄、也耐轻度盐碱,pH19以下均能生长。适应性极强。
旱柳(S.matsudana Koidz.)形态与垂柳近似,树干挺直,小枝向上伸展,雌花具2个腺体,耐寒力强,多见于南京以北。
http://baike.baidu.com/view/41637.htm
http://baike.baidu.com/view/34096.htm
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