盆栽米兰花掉叶子怎么办
盆栽米兰花掉叶子怎么办,米兰是在当年新梢上开花的,所以不能通过每年重剪回缩来降低树冠,否则把枝梢剪掉,就不会开花,所以就导致开花部位逐年上移,使基部叶片越来越少受到光照,久而久之,基部叶片就会脱落,最终使整个植株显得头重脚轻,观赏价值大大降低。要想使米兰树冠下部叶片不脱落,必须从以下几个方面去做:
①尽量使植株下部叶片多见阳光,可垫高花盆,或用反射薄膜铺在地面,以向上反射光线。
②为了防止徒长,促发分枝,一年生的植株,要注意摘除生长过旺的顶尖叶芽。二年生以上的成株,一般分枝已比较多了,假如主枝问长势不平衡,可在早春芽未萌动前,将强的主枝上的侧枝疏掉一部分,同时把留下来的侧枝用绳子绑拉下垂,控制其生长。对弱的主枝则进行摘心,适当时候也可少量短截,促发新枝,这样就可使整个树冠整齐一致、分布均匀、通风透光,同时也防止叶片部位逐年向上移动。
③当植株花蕾太多时,可适当间疏一些花序。摘除一些花序,也就相对地减少养分的消耗,而有充足的养分供给叶片的生长,这样相应地防止了植株下部叶片的脱落,以上就是关于盆栽米兰花掉叶子怎么办的介绍。
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