4种披碱草属野生牧草在高寒地区农艺性状及生产性能的评价

以4种披碱草属野生种质为材料,对其生育期、株高、茎叶比、分蘖数、种子产量等主要农艺性状及生产性能进行比较试验。结果表明,在4种供试材料中,披碱草的农艺性状和生产性能最为突出,其单株鲜重最高,单株分蘖数最大,茎叶比较小,具有产草量和种子产量高的优势,对寒旱环境适应性强。垂穗披碱草的单株鲜重、单株分蘖数两个指标表现次之,黑紫披碱草表现最差。

Evaluation on agronomic characters of four Elymus species in alpine region

Four wild species of Elymus were used to study the main agronomic characters and production performance by measuring the plant height,leaf length and width,ratio of stem and leaf,tillers and seed yields.The results indicated that Elymus dahuricus showed the highest fresh grass yield and seed yield and number of tillers per plant,its ratio of stem and leaf was also high.It could adapt the cold and dry environment in alpine region.E.nutans had the potential in productivity,while E.atratus was the worst.