晚香玉的管理上应该注意哪些问题
晚香玉多采用分株繁殖,每年分离子球培育。这些子球若精心栽培,可于1~2年内成为开花种球。
选择阳光充足的旱地,深翻整地,并施人基肥。同时,施氮、磷、钾肥每平方米各11.2克作为基肥,选择直径3厘米左右的块茎为种球。由于出苗较慢,一般需一个多月才能出苗。因此,常在定植前以30℃温度催芽3周,待发芽后种植,这样,不仅生长加快,开花提早,而且花的质量也明显提高。种植密度一般为15厘米x20厘米。
为使其开花较好,可采取浅栽,以种球刚露出土面为宜。一般3月定植的种球,能于6~7月开花;5~6月定植的,于8~9月开花;7~8月定植的,于10~11月开花。
11月种植于室内,温度保持在20℃左右,春节前后即可开花。2月份在温室中定植,可于5~6月间开花。种球种植后浇足水,在苗期可节制灌水,花葶抽出后,应浇足水,并施重肥,以促进花香而大。
当花序的最下面1~2朵花开放时即为采花期。在地上部分的块茎秋霜枯死后掘起,在温暖通风的地方放置两周,使其干燥,然后贮藏于沙中越冬。块茎在贮藏期间,若温度过高或过低,均会导致烂球,必须注意。
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