“草长莺飞”这句成语出自南朝丘迟的《与陈伯之书》:“暮春三月,江南草长,杂花生树,群莺乱飞。”莺,是指黄鹂。后来人们就用“草长莺飞”形容江南春天的景色。奇奇:我们人类的生存离不开草!这是为什么呢?草能养活牛羊,又能保持水土,还能充当药材,而在人口密集的城市里,草的作用更是无法取代。首先,草坪是城市的“绿肺”。通常一个人每天需要呼出0.9千克的二氧化碳,吸入7.5千克的氧气,而一亩草坪可吸收30个人所呼出的二氧化碳,放出大量的氧气。草坪 “The grass is longing to fly” This phrase idiom from the southern Qiu Hou “and Chen Bozhi book: ” late spring March, Jiangnan grass long, miscellaneous peanut tree, group warbler flying. “” Warbler, refers to the oriole. Later, people use “long grass Yingfei ” to describe the scenery of southern spring. Kiki: The survival of our humanity is inseparable from the grass! Why is this? Grass can feed cattle and sheep, but also to maintain soil and water, but also act as herbs, and in densely populated cities, the role of grass is irreplaceable. First of all, the lawn is the city’s “green lungs.” Usually a person needs to exhale 0.9 kg of carbon dioxide per day, inhaling 7.5 kg of oxygen, and an acre of lawn can absorb 30 people exhaled carbon dioxide, release a lot of oxygen. lawn