盆栽大丽花怎样矮化?
盆栽大丽花怎样矮化,大丽花植株高大,要使盆栽大丽花植株矮化,花朵丰满,可采取以下措施:
(1)含蕾枝条扦插:选取大丽花母株生长的腋芽或含蕾枝扦插,能有效控制株高。具体方法是:选择长约12一15厘米的幼芽,从节下约l厘米处用利刀切下,剪去茎部叶片,切口涂草木灰防腐,然后插人沙盘内,浇透水,放背阴处。每天喷水1-2次,约10天之后移至半阴处,20天左右即可生根。根长约3~4厘米时上盆栽植,开始浇水不宜过多,需经常向叶面洒水,约每7~10天施一次稀薄饼肥水,直至第一朵花破绽为止。两个月之后,便可育出株高约30~35厘米左右、花朵丰满的大丽花。
(2)控水控肥:在生长期间控水控氮肥,增施磷钾肥,可使大丽花株矮、茎粗、花大。切忌傍晚多浇水,否则会引起植株徒长。早上浇水以保持嫩叶、嫩梢能自然舒展为度。施肥不可过多,生长前期施以速效氮肥,后期用根外追肥法向叶面喷施0.2%的磷酸二氢钾水溶液,即能控制株高。
(3)适时摘心:当幼苗长到6~8厘米时即进行第一次摘心,使主枝留4片叶,侧枝长出后留2片叶再摘心。以后根据需要适当摘心,并随时抹去叶芽。
(4)药剂抑制:使用矮壮素、多效唑等生长延缓剂,也可使植株矮化,但要注意用药浓度,以免造成药害,以上就是关于盆栽大丽花怎样矮化的介绍。
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