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含羞草观察笔记

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发表时间:2020-10-10 13:29网址:http://zw56789.com

我们小区里的草坪上有几株含羞草,因为与众不同,引起了我的好奇心,所以我特别留心观察它。


春天,含羞草发芽了,嫩绿嫩绿的,杆子只有1到2分米长。夏天,含羞草枝叶茂盛,叶子很奇特,一根很细的茎,两旁有一些细细的像小针一样的`东西,和水杉树的叶子很像。秋天,含羞草开花了,一朵朵小花毛绒绒的,有粉红色的,有紫色的。虽然它很小,不起眼,但当你仔细观察时,就会觉得它美丽又可爱,那是一种娇气的美,很招人喜欢。秋末冬初,含羞草结果了,果子像扁豆,外面有一层绿色的外壳,里面是种子。过了一段时间,外壳变成了棕色,不久,种子就从壳子里跳了出来,落在泥土上,等明年春天生根发芽,就这样一代代地繁衍下去,它的生生息息和其它植物没什么两样。让人纳闷的是,为什么一碰它,叶子就会下垂合拢呢?我百思不得其解,只好上网找资料。


原来,在含羞草叶柄的茎部,有一个储藏液体的囊袋,它好像液压机里的油缸。平时,囊袋里装满了液体,当你触动叶子的时候,囊袋里的液体就向上部和叶子两侧流动,叶子在重力作用下就合拢了,等平静一会儿后,液体慢慢从两侧流回囊袋,叶子重新展开了。


有时,我故意碰碰它们,和它们开开玩笑。


参考翻译:

There are a few mimosas on the lawn in our community. Because they are different and aroused my curiosity, I paid special attention to them.


In spring, the mimosa sprouts, and the pole is only 1 to 2 decimetres long. In summer, mimosa has luxuriant branches and unique leaves. It has a very thin stem with some thin needle-like things on both sides, which are very similar to the leaves of Metasequoia trees. In autumn, the mimosa blossomed, and the small flowers were fluffy, pink and purple. Although it is small and inconspicuous, when you observe it carefully, you will find it beautiful and cute. It is a delicate beauty, which is very attractive. At the end of autumn and early winter, mimosa bears fruit. The fruit is like lentils, with a green shell on the outside and seeds inside. After a while, the husk turned brown. Soon, the seeds jumped out of the husk and landed on the soil. When they took root and germinated next spring, they would continue to multiply from generation to generation, and it would live and live with other plants. It's no different. What makes people wonder is, why do the leaves droop and close when I touch it? I was puzzled and had to go online to find information.


It turns out that on the stem of the mimosa petiole, there is a sac for storing liquid, which is like an oil cylinder in a hydraulic press. Normally, the sac is filled with liquid. When you touch the leaf, the liquid in the sac will flow to the upper part and both sides of the leaf. The leaf closes under the action of gravity. After a while, the liquid slowly flows from both sides. The side flowed back into the sac, and the leaves unfolded again.


Sometimes, I touched them on purpose and joked with them.


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