花卉花期如何施肥?
关于盆栽花卉施肥,笼统地说“忌花期施肥”,似有失偏颇之嫌。把握好花期施肥之度,应视具体情况而定,对于白兰、米兰、茉莉、杜鹃、月季、花石榴、紫薇、珠兰、鹤望兰等花期长达数月之久的花卉种类,在花期还是应该施肥的,只不过是要掌握好施肥的浓度、种类和时间。
其一,在开花高峰期到来前后,都应薄肥勤施,既可为大量开花积累营养物质,又可弥补植株因开花消耗的养分。
其二,尽量用无异味的肥料。香花类盆栽,特别是摆在室内期间,如果施了有异味的饼肥水等,与香味相斥,更影响室内的空气质量,实是大煞风景,改用磷酸二氢钾之类化肥或其他颗粒状化肥,这样就可一举两得。
其三,采用薄肥浇施可以延长花期,提高开花质量。切忌生肥、大肥、浓肥,以免对植株根系造成不必要的伤害,甚至导致植株死亡。应尽量选用沤透的肥料,控制在较低的浓度。
另外,花期施肥不要玷污花朵叶面,也不要采用施叶面肥的方法,以免影响观赏;再则,盆土过湿时,也不应施肥,以免造成不必要的浪费,可待盆土稍干后再行施肥。
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