四份披碱草属牧草在同德地区生产性能评价

Production Performence Evaluation of Four Materials of Elymus in Tongde Region

以四份披碱草属牧草材料为研究对象,在青藏高原高寒地区旱作条件下从生育期、产量、茎叶比等方面进行了生产性能评价,为其在生态环境建设和种子生产方面提供理论依据。结果表明,四份材料在同德地区均能安全越冬,表现出较强的抗寒、抗旱能力。各材料在生长第二年产量最大,青牧1号老芒麦和同德老芒麦在同德地区产量表现较高,其在第二年鲜草、干草和种子产量分别为36500.2 kg/hm2、44894.6 kg/hm2、908.7 kg/hm2和35500.2kg/hm2、10924.0 kg/hm2、902.4 kg/hm2。且这两个品种叶量丰富,是饲喂家畜的优质牧草。四份披碱草属材料适宜在海拔3200 m左右的地区种植。

Four materials of Elymus were compared in growth period,grass yield,seed yield and stem/leaf ratio in dry farming to provide theory base for construction of ecological environment and seed production in arctic-alpine region of Qinghai-Tibet Plateau.They could winter safely in Tongde region,which showed strong capacity of drought,cold-resistance.The yield of the tested materials was the highest in second year.The yield of Elymus sibiricus L.cv.Qingmu No.1 and Elymus sibiricus L.cv.Tongde was higher,their fresh grass yield,dry grass yield and seed yield in second yield were 36500.2 kg/hm2,44894.6 kg/hm2,908.7 kg/hm2 and 35500.2 kg/hm2,10924.0 kg/hm2,902.4 kg/hm2 respectively,they were good herbage for livestock with richer leaves.Four materials can be cultivated in arctic-alpine region of 3200 m in altitude in Qinghai-Tibet Plateau.