茵芋为何入夏后叶片泛白生长不良?
茵芋为常绿灌木,分布于海拔850~1500米的山区林下,山谷或溪边。性喜温暖和半阴环境,宜阴湿,怕强光暴晒。较耐寒,但忌高温和过度严寒。畏干旱、空气干燥、盐碱和土壤瘠薄。栽培宜用疏松肥沃、排水良好、富含有机质的酸性至微酸性沙壤。
盆栽茵芋入夏后,出现叶片泛白和生长不良现象,主要是与夏季高温和阳光暴晒有关。它的生长适温为18~24℃,当气温超过30℃以上时,必须为其搭棚遮荫,同时给予叶面喷水和通风透气,为其创造一个通风、凉爽、湿润的小环境,以利于其安全过夏;
否则,它会被迫进入休眠状态。盆栽茵芋在夏季必须控制好光照,自仲春至中秋生产性栽培应给予搭棚遮荫,遮光50%~60%。家庭盆栽,春秋二季可搁放于东向窗前,导致其叶面被灼伤,叶片泛白微黄就是叶片轻度灼伤的具体表现。
家庭种养冬季可摆放在南向窗前,让其充分见光。春末夏初,遇到久雨初晴的天气,一定要做好遮荫的准备工作,以防意外骄阳灼伤叶片。
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