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怎么能让昙花在白天开放
更新时间: 2020-07-05 00:00:00  

当花蕾膨大并开始向上翘时,白天搬到暗室中,或用黑色塑料薄膜做一个遮光罩,将其罩住,不要有一点透光。自晚上7点到翌晨6点,用较强的电灯光照射,7到10天后,昙花就能在白天开放,时间可长达1天。

如欲使昙花延缓1到2天开放,可在临近开花的时候,把整个植株用黑罩子罩起来,放在低温环境下,在低温环境下,昙花便可以按照人们预定的日期延迟开放。

关键词: 怎么 昙花 白天 开放

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