盆栽水仙为何不能持续开花?
盆栽水仙为何不能持续开花?购买的水仙球,为商品种球,已经过2-3年的精心培育,其鳞茎体内积蓄有大量的养分,才能正常抽葶开花。商品种球经过一次孕蕾开花后,已消耗了体内绝大部积累的养分,只剩下一个干瘪松软的外壳,若在花后又未能及时给予补充施肥和精细管理,在短时间内很难积累有足够的养分供给植株再次开花,需要经2年以上时间的恢复性调理,方有可能再度开花。
应于每年的端午前后,将已枯黄的地栽或盆栽水仙球取出,剪去枯黄的叶片,洗净后晒干收藏起来;待到霜降后再将其栽种于背风向阳、不积水处,也可用花盆盛装肥沃的培养土栽种。
水仙性喜温暖湿润的气候,生长期间喜凉爽湿润,需充足的水肥,但忌长时间淹水,要求干湿交替,生长后期需充分干燥;生长适温为10~20℃,能耐短时间的0℃以下低温;夏季气温高时进入休眠状态,此时进行花芽分化;秋末气温下降后,又开始发芽生长。开花期间如果温度过高,则开花不良。
水仙喜光,盆栽冬季应搁放于南向窗前;栽培宜用疏松肥沃、排水良好的中性或微酸性土,但也较耐盐碱。如此栽种、掘起反复2~3年,它才能再度开花。
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