草类是地球的主要植被 ,它的生长环境多种多样 :从高山到海洋、从湿地到荒漠、从南方热带雨林到北方冰冻雪原、从庭院到野外 ,草类可以说无处不在 .其生长期有长有短 ,有的极难栽培 ,有的又很容易生长 ,生命力十分顽强 .有史以来 ,人类就对草类进行着广泛地利用 ,如放牧、采药 Grass is the main vegetation on the earth, its growth environment varied: from high mountains to the ocean, from wetlands to the desert, from the southern rainforest to the northern frozen snow, from the courtyard to the wild, the grass can be said that its growth There are long and short period, some very hard to cultivate, and some very easy to grow, vitality is very tenacious.At the same time, humans make extensive use of grasses, such as grazing, herbs