无芒雀麦草(Bromus mermis Leyss.)是一种根茎型多年生禾草,耐寒、抗旱,优质,高产,在国内外广泛栽培。在青海高原牧区水热条件较好的地方也可以种植,其产量和质量均优于目前广泛栽培的当地野生种类。但由于受高寒、干旱、生长期短等高原气候的影响,播种当年地上部分生长缓慢,地下部分不能形成强大的根系和根茎,甚至不 Bromus mermis Leyss. Is a rhizome perennial grass that is hardy, drought tolerant, high quality and high yield and widely cultivated at home and abroad. It can also be planted where the hydrothermal conditions in the pastoral areas of Qinghai Plateau are better, and its yield and quality are better than the wild species widely cultivated in the present. However, due to the alpine, drought, short growth period and other plateau climate, sowing the ground part of the slow growth, the underground part of the root can not form a strong and rhizome, or even