仙人掌及多肉植物龙舌兰的培育方法是什么?

2025-03-16 18:29:03
推荐回答(1个)
回答1:

1.形态特征为龙舌兰科常绿多肉植物。地下具直立粗壮的根茎,地上茎极短,由叶基抱合而成。叶片在短茎上呈轮状互生,排列紧紧无间隙,基部叠迭抱合。叶肉肥厚,长剑形,长1米以上,先端渐尖,顶端具刚刺,叶缘具刺状齿,截面呈“V”字形,正反两面被有白粉,灰绿色。在龙舌兰的一生中只开花一次,开花后植株枯萎死亡。

2.种类和品种栽培品种有金边龙舌兰、金心龙舌兰、绿边龙舌兰、窄叶龙舌兰等。同属的花卉植物还有以下几种:

(1)鬼脚掌 植株呈莲座状,叶长三角形,坚韧粗壮,叶面深绿色,具灰白色斑纹。

(2)鬼若叶 直立生长,坚硬肥厚,长卵形,先端急尖,中央下凹,青绿色上被白粉。

(3)八荒殿 叶片向四周开展,长剑形,先端渐尖呈钢刺状,叶肉坚硬,灰绿色。

3.习性原产于墨西哥。性强健,较耐寒,在5℃的低温下不会受冻,也耐高温和暑热。在华南地栽时应见充足的阳光,但不能忍耐北方旱季的烈日暴晒,否则叶面会出现枯黄的斑块;金边、银边等品种在日晒下会失去彩色,但也不能全部蔽荫。要求排水良好的沙质土,耐干旱怕水涝,能耐盐碱。

4.繁殖方法龙舌兰的分生能力强,地下根茎上的不定芽每年都能萌生出一些根蘖苗。可用小刀自基部把它们与母株切开,同时把盆土创松,找出根蘖苗的自生幼根,连根挖出栽入小盆。分割时不要用手硬掰,以防将幼株内的髓心抽出而不能成活。

5.栽培和养护龙舌兰耐干旱和瘠薄,用盆要小;用含沙培养土上盆,或直接用面沙上盆,不必施肥,也不必年年翻盆换土,以防生长过快而无处陈设。盆土不干透不要浇水。在北方,春、夏两季应适当遮荫,室内陈设时应放在南窗附近,不能完全蔽荫,否则叶片下垂并失色。秋季可多见阳光,盆内切勿积水,以防根茎腐烂。

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