怎样使半支莲开花繁茂?
怎样使半支莲开花繁茂?半支莲又名太阳花,在开花时期,其花日出开放,日暮而合,阳光越烈,开花越好,故而得名“太阳花”。要使半支莲开花繁茂,必须给予光线充足、疏松、排水良好的土壤,并做好合理肥水等工作。
半支莲为强阳性植物,生长开花期需要充足的阳光。露地种植必须考虑种在朝南向阳有充足光照的场所。上海地区6~8月正值高温季节,阳光强烈,气温常达35℃左右,此时正值半支莲开花时节,若遇阳光充足的干燥气候,半支莲必然开花繁茂鲜艳,花在中午怒放,清晨和傍晚光照不足时即行关闭。开花阶段如遇多阴及多湿天气,植株不但开花差,同时容易腐烂。
半支莲对土壤的要求不高,在肥分不足的土壤上也能生长,但在排水良好、疏松肥沃的菜园土上栽培则生长更旺,露地栽培忌种植在地势低洼易积水处。若采用盆栽,其培养土一般可用园土1份、腐叶土1份加上基肥拌匀即可。
半支莲对肥水要求也不太高,生长期水分不宜过多,由于其肉质茎具有一定的抗旱能力,土壤稍带干生长仍能良好,但较长时期干旱高温,也要适当浇水,尤其盆栽不可使盆土过干。为促使植株增加分蘖,生长期追施液肥3~4次,可使开花更为茂盛。
半支莲植株矮小,枝叶茂密,地栽宜群植,开花时灿烂一片,观赏价值更高。
半支莲果实一旦成熟即行开裂,易使种子丢失,所以在果实呈黄褐色尚未完全成熟时即可采收。播种宜在春季4月进行,可播于露地苗床,也可直播于盆内,在20℃左右时,发芽整齐,苗具3对叶片时可移植。直播的播后约2个半月即可开花。扦插在7~8月取嫩梢进行,生根容易,9~10月可以开花,以上就是关于怎样使半支莲开花繁茂的介绍。
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