优质抗旱小麦新品种临丰3号选育研究

临丰3号是山西省农业科学院小麦研究所育成的优质抗旱高产冬小麦新品种.该品种产量高,在山西省旱地组区域试验和河北省节水区域试验中平均产量3 862.5～5 460.0 kg/hm2,比对照品种增产7.58%～13.04%;根系发达,抗旱性强,其抗旱指数平均为1.13;品质优良,粗蛋白15.26%,湿面筋32.7%,沉降值52.2 ml,形成时间5.5 min,稳定时间7.2 min,面条评分86.5,馒头评分82.5;抗病性好,经鉴定中抗白粉病,低抗根腐病,免疫吸浆虫;后期叶片功能期长,抗干热风,籽饱满,落黄好.该品种株高75～80 cm,长方形穗,长芒,穗粒数35～40粒,白粒,角质,千粒重40～45 g.该品种适宜在山西省南部麦区、河北省黑龙港、陕西省渭南和渭北旱垣区的旱地种植.     

Multi-decadal variations in glacier flow velocity and the influencing factors of Urumqi Glacier No.1 in Tianshan Mountains,Northwest China

Urumqi Glacier No. 1 is a representative glacier in the inland areas of Central Asia and is the only Chinese reference glacier in the World Glacier Monitoring Service. In this study, we explored multi-decadal variations in the flow velocity of the glacier and the influencing factors based on continuous field observations and path coefficient analysis. Results show that the glacier flow velocity decreased from 5.5 m/a in 1980/1981 to 3.3 m/a in 2010/2011. The annual variation in the direction of glacier flow velocity in the western branch and eastern branch was less than 1°–3°, and the change of glacier flow velocity in the western branch was more dramatic than that in the eastern branch. Glacier flow velocity was influenced by glacier morphology(including glacier area, glacier length, and ice thickness), glacier mass balance and local climate conditions(air temperature and precipitation), the glacier morphology being the leading factor. The long-term flow velocity data set of Urumqi Glacier No. 1 contributes to a better understanding of glacier dynamics within the context of climatic warming.