龙须草(Eulaliopsis binata),又名蓑草、羊草、拟金茅、山草根,为禾本科多年生缩根性草本植物。该草在世界上仅分布于亚洲少数几个国家,在我国主要分布在云南、贵州、四川、湖南、湖北、河南、陕西、广西、福建、台湾等省区山地。 龙须草不择土壤,在多种类型土壤上和在缓坡地、陡坡地(甚至陡峭)及非积水平地等多种类型的地形上生长良好。龙须草具有独特的形态结构和生理特性,能耐受高温、干旱、瘠薄、病虫害,并耐割、耐山火等,因而有较强抗逆性和适应性。龙须草由于蓄水固土能力强,被水保部门称为水土保持的先锋草种。一方面,龙须草是一种C_4植物,生长速度快,分蘖能力 Eulaliopsis binata (Eulaliopsis binata), also known as Ephedra, Leymus chinensis, pseudo-Jin Mao, mountain grass root, gramineous perennial shrub herb. The grass in the world is only distributed in a few countries in Asia, mainly distributed in our country in Yunnan, Guizhou, Sichuan, Hunan, Hubei, Henan, Shaanxi, Guangxi, Fujian, Taiwan and other provinces and mountains. Asparagus does not soil and grows well on many types of soils and on many types of terrain, such as on gentle slopes, steep slopes (even steep), and off-level lands. Asparagus has a unique morphological and physiological characteristics, can withstand high temperature, drought, infertility, pests and diseases, and cutting resistance, fire resistance, etc., which have strong resistance and adaptability. As a result of water storage and soil construction, asparagus is called pioneer grass and soil by soil and water conservation department. On the one hand, asparagus is a C_4 plant with fast growth and tillering ability