我国北方旱区农业系指沿昆仑山——秦岭——淮河一线以北的干旱、半干旱和半湿润偏旱区,依靠天然降水和旱地灌溉的农业,包括16个省(市)的965个县,面积占国土总面积的56％,耕地7.7亿亩,占全国总耕地面积的51％,其中没有灌溉条件的旱地占65％。本区地域辽阔,地形复杂,气候 Agriculture in the northern arid region of China refers to agriculture that depends on natural precipitation and dryland irrigation along the arid, semi-arid and semi-humid arid areas north of the Kunlun Mountains-Qinling-Huaihe River, including 965 in 16 provinces County accounts for 56% of the total land area and 770 million acres of arable land, accounting for 51% of the country’s total arable land, of which 65% of the dry land is irrigated. The area is vast, complex terrain, climate