西藏3种野生披碱草农艺性状分析

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对采自西藏不同海拔的3份野生披碱草属Elymus和2份青海引进的披碱草属Elymus材料进行农艺学性状和生产性能评价,为西藏高寒地区筛选育种材料提供理论依据.结果表明:供试的5份披碱草品种均可在拉萨地区进行生产和开发利用.采自高寒草原海拔4 045 m的工布江达披碱草和青海引进的青牧1号老芒麦表现出较好的生产性能,可作为饲草型牧草进行选育;采自海拔4 360 m的当雄披碱草和2种青海引进的披碱草穗数较多,穗子较长,表现出较好的种子产量,其中采自海拔4 360m的当雄披碱草叶量较丰富,适口性好,可作为放牧型牧草进行选育;采自高寒草原海拔4045 m的工布江达披碱草干鲜比和干草产量较高,也可作为刈割后调制干草.
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