如何让香石竹多开花?
香石竹花色娇艳,具浓香,是世界上最重要的切花材料之一。要使其多开花,必须促使其多分枝。而要使它多分枝,需从幼苗期开始,进行多次摘心。当幼苗长有8~9对叶片时,进行第一次摘心,保留4~6对叶片;待侧枝长出4对以上叶片时,每枝保留3~4对叶片进行第二次摘心,最后使整个植株有12~15个侧枝为好。
孕蕾时每枝只留顶端一个花蕾,顶部以下叶腋萌发的小花蕾和侧芽要及时全部摘除。第一次开花之后,要及时剪除花梗,每枝保留基部两个芽,将其余的侧芽全部除去。经过这样反复摘心(最后一次摘心要在8月中旬以前结束),就能使株形优美,花繁色艳。
要使香石竹花繁色艳,除需进行多次摘心外,还必须加强水肥管理。香石竹生育期间,一般每隔10天左右施1次腐熟的稀薄饼肥水。浇水要见干见湿。施肥浇水后要及时进行松土,以利通气。光照要充足,但盛夏宜适当遮阴。雨季要及时排水,防止水涝。
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