植物睡眠在植物生理学中被称为睡眠运动,它不仅是一种有趣的自然现象,而且是个科学之谜。每逢晴朗的夜晚,我们只要细心观察,就会发现一些植物已发生了奇妙的变化。比如常见的合欢树,它的叶子在白天舒展,一到夜幕降临,那无数小羽片就成双成对地折合关闭,好像被手碰过的含羞草。 Plant sleep, known as sleep movement in plant physiology, is not only an interesting natural phenomenon, but also a scientific mystery. On a clear night, if we look carefully, we will find some wonderful changes have taken place in plants. Such as the common Acacia tree, its leaves stretch in the daytime, at night fell, then countless small feather pillows fold into pairs in close, as if touched by hand mimosa.