洒金桃叶珊瑚为什么难繁殖与养护?
洒金桃叶珊瑚为什么难繁殖与养护?家庭盆栽洒金桃叶珊瑚生长欠佳、扦插不易生根,主要是未能充分了解和掌握洒金桃叶珊瑚的生物学特性所致。洒金桃叶珊瑚为山茱萸科小灌木。它叶形奇俏,叶色鲜亮,浓绿的叶片上散生有大小不等的金黄色斑块,明暗变幻,碧黄相间,是很受人们欢迎的室内观赏植物。
因其极耐阴,且对烟尘和大气污染具有很强的抗性,尤适于城市家庭室内摆设,其枝叶还可做切花材料。洒金桃叶珊瑚的繁殖以夏季嫩枝扦插为主。6月初剪取半木质化稍强的当年生绿枝,截成长10~15厘米的穗段,带有顶芽并保留有上部3~4个叶片的插穗最易生根。扦插基质用稻壳灰与细沙以1:1的比例配制最为理想。将拌和均匀的扦插基质装人大花盆或条形槽中,一般厚度为20~30厘米,将剪好的插穗按5厘米×5厘米的株行距插人基质中,入土深度约为穗长的1/2~2/3,只将插条上部和叶片露于基质外,经常喷水保持基质湿润。
最好能蒙罩塑料薄膜保湿,同时给予搭棚遮荫。通常经过半个月即可在创口上形成乳白色的愈合组织,一个月左右便能分化出完好的根系,再经过20~30天,就可进行分栽或上盆。洒金桃叶珊瑚喜阴湿,因此在养护过程中,要保持盆土湿润和适度遮荫。在排水良好、疏松肥沃的盆土中生长良好。由于冬季不甚耐寒,淮河以北地区栽培,需在室内才能安全越冬。
夏季怕炎热日灼,可将其长时间放于室内。在整个生长季节,每半月浇施一次饼肥水,早晚摆放于阳台上接受阳光。炎热季节经常给予叶面喷水,这样才能使其叶片长时间保持鲜嫩明艳。
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