中文摘要：

采用83个样点数据,研究了青藏高原栽培大麦β-葡聚糖含量的分布特征.结果表明：在地理水平方向上,青藏高原栽培大麦β-葡聚糖含量总体呈现出斑块状交错分布的格局,并形成了以青海贵德、同德,甘肃夏河、合作为中心的青藏高原东北部和以西藏江孜、白朗、谢通门、日喀则、拉孜、康马、贡嘎、曲水为中心的青藏高原西南部等两个栽培大麦β-葡聚糖含量高值区;在地理垂直方向上,栽培大麦β-葡聚糖含量呈现出双峰曲线分布格局,在海拔2700-3000 m和3600-3900 m形成2个高峰区,这2个高峰区栽培大麦β-葡聚糖含量的平均值分别为（5.7±1.7）%和（4.6±1.1）%;对栽培大麦β-葡聚糖含量影响重要值指数在40.0%以上的因子依次是籽粒颜色〉穗密度〉9月平均相对湿度〉土壤速效氮含量〉土壤速效钾含量〉6月平均气温日较差〉≥10℃积温〉年均气温〉土壤速效磷含量〉9月平均气温日较差.

英文摘要：

β-glucan content spatial distribution characteristics of cultivated barley in Qinghai-Tibet Plateau were investigated based on the data measured from 83 sampling sites. The resuhs showed that β-glucan content exhibited a macrocosm pattern of spatial distribution along the horizontal direction in Qinghai-Tibet Plateau, with staggered patches of different values. Two regions of higher β-glucan content were observed with centers of Guide and Tongde in Qinghai Province and Xiahe and Hezuo in Gansu Province （ northeast）, and Jiangzi, Bailang, Xietongmen, Kangma, Gongga and Qushui in Tibet （southwest）. Along the vertical direction, Shigatse, Lazi, β-glucan content distribution pattern appeared with double peak curves. There were two high value zones between the altitudes from 2700 m to 3000 m and from 3600 m to 3900 m, with averageβ-glucan content value of （ 5.7± 1.7） % and （4.6± 1.1 ） %, respectively. Influencing factors of β-glucan content with impor- tance value index more than 40.0% were as follows： grain color 〉 ear density 〉 average relative hu- midity in September 〉 soil available N content 〉 soil available K content 〉 average diurnal tempera- ture range in June 〉≥ 10℃ accumulated temperature 〉 average annual temperature 〉 soil availa- ble P content 〉 average diurnal temperature range in September.