Sunday, December 19, 2010

描述 Description

別名 Common Name:
虎皮兰、千岁兰、虎尾掌、锦兰、虎尾草、虎皮剑 Snake Plant, Mother-in-law's Tongue, Bowstring Hemp

学名 Scientific Name:
Sansevieria Trifasciata

科別 Family Name:
假叶树科/ 龙舌兰科,  Ruscaceae/ Agavaceae

属別 Genus Name:
虎尾兰属Sansevieria

原产地 Origin:
非洲西部和南部 Tropical west Africa from Nigeria east to the Democratic Republic of the Congo.

植物照料 Plant Care:

其他注释 Others Note

生长习性
金边虎尾兰栽培用土喜疏松、通气、排水良好的土壤可用腐叶土、壤土(或田园土)和等量粗沙加少许腐熟厩肥,混匀配成营养土浇水高温季节应多浇水,保持盆土湿润由于金边虎尾兰忌强光,夏季要适当遮阴冬季放在向阳处,少浇水,保持盆土干燥用塑料盆、瓷盆直接栽植时,一定更要少浇水,宁干勿湿,否则,水一多便会烂根死亡生长期间注意保持叶面清洁,可用喷壶经常喷洗施肥春季可施用一次腐熟的饼肥,如香油饼、豆饼等生长期间可浇施用饼肥浸泡的稀薄肥水进入冬季停止施肥

栽培技术
植物栽培
金边虎尾兰抗逆性强,耐干旱,喜温暖环境,生长适温为18℃至27℃,冬季在12℃以上能顺利越冬
  一、用盆最好用泥盆栽植,泥盆外可套塑料盆或瓷盆,既通风透气,外形又美观
  二、用土喜疏松、通气、排水良好的土壤可用腐叶土、壤土(或田园土)和等量粗沙加少许腐熟厩肥,混匀配成营养土
  三、浇水高温季节应多浇水,保持盆土湿润由于金边虎尾兰忌强光,夏季要适当遮阴冬季放在向阳处,少浇水,保持盆土干燥用塑料盆、瓷盆直接栽植时,一定更要少浇水,宁干勿湿,否则,水一多便会烂根死亡生长期间注意保持叶面清洁,可用喷壶经常喷洗
  四、施肥春季可施用一次腐熟的饼肥,如香油饼、豆饼等生长期间可浇施用饼肥浸泡的稀薄肥水进入冬季停止施肥
  五、繁殖采用分株法,金边虎尾兰一株一年能生出三个小芽,春秋可结合换盆进行分株,将小株连在母株上的根茎切断,伤口涂抹硫磺粉或草木灰,晾干后便可上盆,3至4芽为一单位不能采用扦插法繁殖,否则新生植株叶缘会失去金黄色金边虎尾兰生性强健,叶色美丽,只要按以上几点管理,便可亭亭玉立,充满生机

栽培品种
长叶金边虎尾兰:叶长30~50厘米,3叶以上,叶缘具黄色镶边
短叶金边虎尾兰:叶短,长12~15厘米,六叶以上,外形酷似莲花造型,叶缘具黄色镶边
其他有银纹虎尾兰、白斑虎尾兰、 黄斑虎尾兰、 黄短叶虎尾兰、 密叶金边虎尾兰、 银短叶虎尾兰

主要用途
金边虎尾兰是一种能净化室内环境的草本观叶植物来自美国宇航局的科学家们的研究发现,金边虎尾兰在吸收二氧化碳的同时放出氧气使室内空气中的负离子浓度增加负离子是空气中一种带负电荷的气体离子,有人把负离子称为“空气维生素”,并认为它像食物的维生素一样,对人体及其他生物的生命活动有着十分重要的影响,有的甚至认为空气负离子与长寿有关,称它为“长寿素”
负离子可使大脑皮层功能及脑力活动加强,精神振奋,工作效率提高,能使睡眠质量得到改善,使脑组织的氧化过程力度加强,侃脑组织获得更多的氧负离子还能够显著扩张血管,解除血管痉挛,达到降低血压的目的,负离子对于改善心脏功能和改善心肌营养也大有好处,有利于高血压和心脑血管疾患病人的病情恢复,它能使血流变慢、延长凝血时间,并使血中含氧量增加,有利于血氧输送、吸收和利用同时负离子还可以提高人的肺活量经实验,在玻璃面罩中吸入空气负离子30分钟,可使肺部吸收氧气量增加2%,而排出二氧化碳量可增加14.5%
当室内有电视杨或电脑启动的时候,负离子会迅速减少,而金边虎尾兰的肉质茎上的气孔白天关闭,夜间打开,在吸收二氧化碳的同时,刚好可以释放出大量负离子,使室内空气中的负离子浓度增加因此在家居公寓,定子楼等场所里,金边虎尾兰已经逐渐成为人们首选的环保植物同时它还能吸收大量的铀等放射性核素,清除甲醛,三氯乙烯、硫比氢、苯、苯酚、氟化氢和乙醚,重金属微粒等因此在15平方米的居室,摆放2至3盆金边虎尾兰,就能收室内80%以上的有害气体,保持空气清新所以金边虎尾兰是人们现代生活中一种必不可少和环保室内植物
病害有叶斑病、炭疽病、细菌软腐病、灰霉病、叶枯病和溃疡病象鼻虫、蓟马和根癌线虫为严重的害虫

Plant Profile
Sansevieria trifasciata is a species of Sansevieria, native to tropical west Africa from Nigeria east to the Democratic Republic of the Congo. It is an evergreen herbaceous perennial plant forming dense stands, spreading by way of its creeping rhizome, which is sometimes above ground, sometimes underground. Its stiff leaves grow vertically from a basal rosette. Mature leaves are dark green with light gray-green cross-banding and usually range between 70–90 cm in length and 5–6 cm in width.
It is commonly called the snake plant (not to be confused with the very similarly named "Snakeplant", Nassauvia serpens), because of the shape of its leaves, or mother-in-law's tongue because of their sharpness. In Japan it is also called 'Tiger's Tail,(とらのお)'. In Brazil it is commonly known as espada-de-são-jorge (sword-of-saint-george). Due to its bladelike shape, it is commonly associated with Ogun, the orisha of war (usually associated with Saint George), and is used in rituals to remove the evil eye. A yellow-tipped variant is known as espada-de-santa-barbara (sword-of-saint-barbara), and is associated with Iansan/Oya, the female orisha of storms (usually associated with the sword-bearing image of Saint Barbara). In Africa the plant is used as a protective charm against evil or bewitchment.

Cultivation and uses
Like some other members of its genus, S. trifasciata yields bowstring hemp, a strong plant fiber once used to make bowstrings.
It is now used predominantly as an ornamental plant, outdoors in warmer climates, and indoors as a houseplant in cooler climates. It is popular as a houseplant as it is tolerant of low light levels and irregular watering; during winter it needs only one watering every couple of months. It will rot easily if overwatered.[1] It improves indoor air quality by removing toxins such as nitrogen oxide and formaldehyde.
Numerous cultivars have been selected, many of them for variegated foliage with yellow or silvery-white stripes on the leaf margins. Popular cultivars include 'Compacta', 'Goldiana', 'Hahnii', 'Laurentii', 'Silbersee', and 'Silver Hahnii'.
It can be propagated by cuttings or by dividing the rhizome. The first method has the disadvantage that the variegation is likely to be lost.

Propagation:
Leaf cuttings of variegated forms generally revert to the non variegated form. Use 4 inch segments of leaves (10 cm) for leaf cutting. Make sure to keep track of which side of the cutting is the top and which is the bottom. Insert the leaf cutting 1 to 1.5 inches (3-4 cm) in rooting medium. If the top side of the cutting is mistakenly inserted in the medium, it will not grow. The medium should be moist, but not wet, and the temperature should be around 75°F (24°F). If the medium is too cold or too wet, the cutting will probably rot. Roots start forming in 3 to 4 weeks, and a couple of months are needed to see the first leaves. Each cuttings might produce several plantlets.

照片 Photos