大丽花块根的繁殖方法?
大丽花块根的繁殖方法,大丽花株形高大、花姿多变、花色艳丽、气质典雅,是布置花坛、花境、庭院及盆栽的重要球根花卉,也是鲜切花的上好材料。观赏价值高的重瓣大丽花因极难获得种子,故生产上多用其纺锤状块根进行繁殖。
冬季贮藏:在比较寒冷的地区,如果大丽花肉质块根不掘起贮藏于室内,极易造成块根受冻腐烂。通常于秋末冬初,当其地上部分枯萎时,将块根掘起,在离茎秆基部5~8厘米处剪断,切不可伤及块根上端的芦头。摊晾3~5天,注意不可冻,待块根略微发软时,方可将其收放在室内的泥土地面上,大丽花块根端部朝上站立,成单层排列整齐,再用微带潮气的沙土盖好;
受伤的大丽花块根要在创口上抹些木炭粉或干净的草木灰,以防腐烂;冬季室内温度保持在3~5℃为宜。贮藏用的沙土不能太干,以免芽眼干枯;也不能过潮,以免发生腐烂。在贮藏期间,如发现有霉烂的块根,要及时剔除。
早春囤芽:经冬藏的大丽花块根,翌春2月将其置于温室内或露地的腐殖土上,大丛块根每隔一定的间距排好,上覆湿沙或腐叶土,仅留根颈于土外,室外囤芽还要加盖塑料薄膜保湿防寒,每天喷水,15天后即可发芽。待芦头上的芽长至2~3厘米时,便可进行分割栽种。
分割定植:经囤芽后的大丽花块根丛,其芦头上长有较多的嫩芽,用锋利的刀具将块根从根颈处分割开,使每一个块根带有1~3个芽,定植于花坛或花境内,也可用于盆栽;一般每穴栽1~3个块根,覆土时应将芦头上的芽露于土外;若遇“倒春寒”吹袭,可于定植穴上加盖稻草防寒,以防块根及嫩芽受害,以上就是关于大丽花块根的繁殖方法的介绍。
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