论文部分内容阅读
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.
The distribution characteristics of β-glucan content in cultivated barley from the Qinghai-Tibet Plateau were studied using 83 sample data.The results showed that β-glucan content of cultivated barley in the Tibetan Plateau showed a patchy staggered distribution in the horizontal direction And formed the northeastern part of the Qinghai-Tibet Plateau with the cooperation of Qinghai-Guade, Tongde and Xiahe in Gansu Province and the construction of the Gyangze area in Tibet with Gyangze, Bailong, Xietongmen, Shigatse, Lazi, Kangma, Gonggar and Qushui In the southwestern part of the Qinghai-Tibet Plateau, the content of β-glucan in the two cultivated barley was high. In the geographical vertical direction, the content of β-glucan in the cultivated barley showed a bimodal distribution pattern. Under the altitude of 2700 ~ 3000 m And 3600 ~ 3900 m, respectively. The average values of β-glucan content in cultivated barley in the two peak areas were (5.7 ± 1.7)% and (4.6 ± 1.1)%, respectively. The factors affecting the important value index of sugar content above 40.0% were the color of the grains> spike density> the average relative humidity in September> the content of available nitrogen in soil> the content of available potassium in soil> the average difference of daily temperature in June> the accumulated temperature of ≥10 ℃> the year Average temperature> Available phosphorus content in soil> Average daily temperature in September is poor.