高寒地区4种禾本科牧草的生产特性比较

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

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。

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.