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一、试验目的乌拉特中旗境内阴山以北的广大牧区是属于温带荒漠草原区,受大陆性干旱型气候控制,冬季寒冷干旱,风大沙多。年平均气温4.5℃,最低温度-34℃。夏季干燥炎热,干热风多,最高温度37℃。年平均降水量209毫米左右,绝大部分集中在七、八月份,占全年降水量的61％。年蒸发量2500—2700毫米,是降水量的十几倍。由于气候条件恶
I. Experimental Purposes The pastoral areas north of Yinshan in Wulatezhongqi belong to the temperate desert steppe area, controlled by continental arid climate, with cold, dry winter and windy sand. The annual average temperature of 4.5 ℃, the lowest temperature of -34 ℃. Summer hot and dry, hot and dry winds, the maximum temperature of 37 ℃. The annual average precipitation is about 209 millimeters, most of which are concentrated in July and August, accounting for 61% of the annual precipitation. The annual evaporation of 2500-2700 mm, is more than ten times the precipitation. Due to bad weather conditions