天气预报 > 其他 > 丝瓜花为什么会早上开花
丝瓜花为什么会早上开花
更新时间: 2020-09-18 00:00:00  

植物选择不同的开花时间是为了吸引不同时间内活动的传粉的媒虫为自己传粉。丝瓜选择了早上较为活跃的昆虫,同时避免了太阳灼烧带来的损失。雌雄花开花时间均在每天上午露水干后,晴天7时至9时,阴雨天气湿度大,温度相应较低时,则延迟到10时以后开放。开花期较短,一般24小时后花冠自然凋谢,柱头变褐,逐步失去发芽授粉能力。

关键词: 丝瓜 为什么 早上 开花

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