怎样水插一品红
用水插繁殖一品红,比用土壤做基质扦插成活率高,出根快。扦插在5月中旬进行,剪取当年生的健壮枝条,在枝节下1厘米处剪断,穗的顶端留2~3片叶,并将叶剪去一半,以减少植株水分蒸发。插时可选用经过酒精消毒的酒瓶、玻璃杯、饮料桶等简便容器。
水要选用凉开水,目的在于避免细菌感染。插穗的接口可用木炭涂抹一下,以抑制白浆流出,防止扦插后腐烂,促使伤口愈合。
插穗放好后,容器应放在通风、有散射光的地方,每3~4天换1次温度相近的水,20天左右即可生根。当气温在23℃左右时,生根最快,上盆后一个月内要避免阳光照射。
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