如何进行一品红的矮化栽培?
一品红生茎长叶有些会长得过高,摇摇曳曳,失去了欣赏的价值,为了使其矮化,可采用下列方法:
(1)对长得既高又密的枝条,可以进行一次短截修剪,时间从8月中旬起到8月下旬止。短截修剪方法是将根基部10~15厘米以上的枝条(包括其他弱枝)全部剪去,并及时追施较浓的肥料2~3次,每周1次,促使它从母本上重新长出新的枝叶,通过这一方法,使日后长出的枝条比原来的短矮许多。如果以后对其中枝条还嫌长得太高的话,还可以用铅丝把过高的枝条顺时针地盘低一些。
(2)边修剪、边扦插繁殖。其方法是把短截修剪下来的无用顶芽枝条,拣长约10~15厘米、生长旺盛的,去除基叶后,插入装有沙土的盆内或塑料罐、桶(底有空洞的)中浇足水,放置室外半阴处或树荫下,平时浇水防干,20天左右生根后,追肥2~3次,届时可变成一盆单株矮化的微型一品红了。
(3)有条件还可采用延缓剂使一品红矮化。其方法是修剪后当长出新的枝叶并将定头时,喷洒0.2%~0.3%的B9溶液,每周1次,约2~3次,同时结合施浓肥2~3次,这样就可使盆栽一品红矮化。
此外,一品红入室时间,宜在10月中下旬,因此时气温下降,日照缩短,利于花芽分化。待苞片开始泛红时,室温保持在10~20℃,到12月中下旬,就可欣赏翠叶丛中一丛红苞片了。
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