一、自然概况民勤西沙窝总面积506万亩,在自然区划上属温带干旱荒漠——灰棕荒漠土地带,典型的大陆性气候,年降雨量仅110毫米并分布不均(50％集中在7—9月),蒸发旺盛年2600毫米为降水量的25倍,干燥度5.33,相对湿度年平均45％左右,平均气温7.8℃,绝对无霜期130天左右。全日照3145.8小时≥0℃积温3562℃≥10℃积温2985℃, First, the natural profile Minqin Xisha nest a total area of ​​506 mu, in the natural division of the temperate arid desert - gray-brown desert land, a typical continental climate, annual rainfall of only 110 mm and unevenly distributed (50% concentrated In July-September), 2600 millimeters of evaporation is 25 times of precipitation, 5.33 degrees of dryness, and annual average relative humidity is about 45%. The average temperature is 7.8 ℃ and the absolute frost-free period is about 130 days. Full sun 3145.8 hours ≥0 ℃ Accumulated temperature 3562 ℃ ≥10 ℃ Accumulated temperature 2985 ℃,