牡丹什么时候开花
牡丹什么时候开花,牡丹一般在四到五月份的时候开花,花期在5月,果期在六月。
要想让牡丹多开花,花大而色艳,必须顺其秉性,掌握其生长发育规律,采取相应的技术措施。牡丹具有“宜冷畏热,喜燥恶湿”的生长习性,因此宜栽在地势较高、土质疏松肥沃、土层深厚而又排水通畅的地方,忌用生土、沼泽土、粘土和炉渣土栽培。牡丹为深根性肉质根,最怕长期积水,故浇水不宜多,以土壤保持湿润为宜。炎热的夏天,应注意给予适当的遮阴。
牡丹的生长发育规律是“春发枝、秋发根、夏打盹、冬休眠”。因此在一般的年份牡丹有3次追肥非常重要。第1次肥在开花的半个月施用,因这次施肥对牡丹当年开花有较大的促进作用,因此又叫促花肥;第2次肥在花谢后半个月内施用,可促进花芽分化和增加开花数量,对第二年开花的多少有很大的影响;
入冬前施第3次肥,这次施肥结合冬季灌水进行,能增加地温,对保护牡丹越冬有良好作用。前2次以施充分腐熟的饼肥为主,亦可适当施些磷、钾肥,第3次可施腐熟堆肥、厩肥。在开花之前进行根外施肥也有较好的效果。每次施肥后次日应充分灌水,并应及时松土,使土壤经常保持疏松状态,既透气又利于保墒。
栽植深浅要适度,若栽植过浅,不易发根、萌芽,也不耐旱;若栽植过深,成活后长势不旺,一般以根颈处与地表面齐平为好。
春季发芽前要进行整枝,剪除新发的萌蘖,开花前掐去瘪芽,花谢后及时剪掉残花,减少养分消耗,以促进生长和翌年开花,以上就是关于牡丹什么时候开花的介绍。
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