我国地域辽阔,干旱半干旱地区面积约占全国土地面积的48%。北方旱区主要分布在沿昆仑山脉、秦岭、淮河一线以北的15个省、市、自治区的大部分地区,特别是内蒙古包头以东、长城沿线和黄土高原的广大地区,是我国北方主要的旱地农业区。加快旱 China’s vast territory, arid and semi-arid areas account for about 48% of the country’s land area. The northern arid regions are mainly distributed in most of the 15 provinces, cities and autonomous regions along the Kunlun Mountains, Qinling and Huaihe River lines, especially in the vast areas east of Baotou, Inner Mongolia, along the Great Wall and the Loess Plateau, and are the major Dry land agriculture area. Accelerate drought