高寒地区4种禾本科牧草的生产特性比较

在青海省铁卜加草原改良试验站,观测了川草2号老芒麦(Elymus sibiricus cv.chuan-cao No.2)、甘南垂穗披碱草(E.nutants cv.Gannan)、扁穗冰草(Agropyroncristatum)和同德短芒披碱草(E.breviaristatus cv.Tongde)的生长表现。结果表明:参试4个品种均能在研究区正常生长发育,其中以同德短芒披碱草表现最好,鲜草、干草和种子产量(1 558.75、540.75和74.79 g/m2)最高;其次为川草2号老芒麦(1 453.33、508.71和67.96 g/m2)和甘南垂穗披碱草(1 439.58、503.67和67.92 g/m2);这三者均是该地区推广应用的较优品种。

Study on the growth performance of four gramineous forages in alpine area

The growth performance of Elymus sibiricus cv. Chuancao No.2, E. nutants cv. Gannan, Agropyron cristatum and E. breviaristatus cv. Tongde were observed in Tiebujia, Qinghai Province. The results showed that 4 species could normally growth and E. breviaristatus cv. Tongde was the best in fresh grass yield, hay yield and seed yield (1 558.75 g/m2, 540.75 g/m2 and 74.79 g/m2), which was followed by E. sibiricus cv. Chuancao No. 2 (1 453.33，508.71，67.96 g/m2) and E. nutants cv. Gannan (1 439.58, 503.67, 67.92 g/m2). All of them were excellent for the research area.