木薯是世界上三大薯类作物之一，是我国重要的旱地作物。
Cassava is as important dry land crop and the one of three big yams crop in the world.
植被类型以旱地作物和水田作物为主，其作物组合以一年一熟和一年二熟为主。
Dry land crop and paddy field crop are main vegetation type, the main crop combine are ripe once a year and ripe twice a year.
秦岭将中国分为南北两个农业区。北方只能栽培旱地作物，南方适合水稻和经济作物。
China is divided by the Qingling mountain into two regions in farming. The north can only support dry farming, the south is good for paddy-rice and economic crops.
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