桂花不开花的原因
盆栽桂花不开花,通常有以下原因:
桂花不开花的原因1、光照不足
桂花喜光,营养生长期在60%光照强度以下时,生长发育衰退,营养生长变差,开花数量减少。光照严重不足时,由于养分积累少,所以不能开花。
桂花不开花的原因2、缺肥
桂花生长与开花量较多,需要消耗大量的养分,盆土瘠薄或肥力不足,会影响其生长与开花。所以,在常见花卉养扩篇橱抽梢时,要施1~2次以氮为主的肥料。在花芽分化期和开花前,应施2~3次以磷为主的肥料。
桂花不开花的原因3、盆土过湿
桂花忌过湿和积水,否则会囚烂根而导致生长不良与不开花,严重的还会导致植株死亡。浇水要遵循“不干不浇、浇则浇透”的原则。暴雨后,要及时倒除积水。特别是雨后天晴,应注意避免损伤根系。
桂花不开花的原因4、土质偏碱
桂花喜微酸性土壤,pH以5.5~6.5为宜。在偏碱性土壤中,桂花常常生长不良而影响开花。
桂花不开花的原因5、烟尘污染
桂花不耐烟尘和污染,在烟尘多或污染后,叶片会变小,容易脱落,并出现只长叶不开花的现象。
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