西藏那曲地区“冬圈夏草”的适应性及其评价

Study on adaptability and evaluation of grass sowing in sheep pen in Nagchoe Prefecture,Tibetan Autonomous Region

在西藏那曲县研究了"冬圈夏草"的适应性,种植羊圈10个,每个羊圈约900 m2。采用单播8种饲草,混播6种组合。结果表明,各处理牧草生长旺盛,产草量高,生长期延长,可延迟至10月底进行收割,此时禾本科饲草料生育期为抽穗期,高度在1 m左右,平均鲜草产量高达28 500 kg/hm2以上。"冬圈夏草"种植简单,可有效缓解春季饲料缺乏的问题,值得推广。

In 2005 and 2006, five households in Nagchoe County of Tibetan Autonomous Region were selected to conduct experiments on the grass sowing in sheep pens. 10 pens,around 900 m^2 each, were planted with forages. Barley （Hordeum sativum ）, oat （Arena sativa ）, rapeseed, Vicia sativa , Annual Medicago spp. ,Astragalus adsurgens ,Onobrychis vociafolia, were used for sole planting and 6 combinations were used,including ＂barley＋rapeseed＂, ＂barley ＋ Vicia sativa ＂, ＂oat ＋ annual Medicago spp. ＂, ＂oat ＋ Astragalus adsurgens ＂, ＂oat ＋barley＂,＂oat＋barley＋Onobrychis vociafolia＂. The result indicated that all grasses could grow well and achieve high production. The average height was around 1 m and the average fresh matter yield was over 28 500 kg/hm^2. This suggested that sowing grass in sheep pen was a proper technique to be extended in order to resolve the forage shortage in winter and spring.