【題目】青藏高原平均海拔在4000米以上,是一個(gè)獨(dú)特的地區(qū)。高原的河谷海拔較低,四季溫暖。據(jù)此完成下面小題。

【1】影響青藏高原河谷農(nóng)業(yè)分布的主要因素是( )

A. 地形 B. 緯度位置

C. 海陸位置 D. 能源

【2】青海省的河谷農(nóng)業(yè)主要分布在(A)

A. 湟水谷地 B. 雅魯藏布江谷地

C. 河西走廊 D. 河套平原

【3】在青藏地區(qū)嚴(yán)酷的高寒條件下,可以種植的農(nóng)作物有 ( )

A. 水稻、甘蔗 B. 小麥、棉花

C. 青稞、豌豆 D. 大豆、玉米

【答案】

【1】A

【2】A

【3】C

【解析】青藏高原平均海拔在4000米以上,是一個(gè)獨(dú)特的地區(qū)，高原的河谷海拔較低,四季溫暖，農(nóng)業(yè)生產(chǎn)方式以畜牧業(yè)為主，種植業(yè)主要分布在河谷地帶。

【1】由題目可知，青藏高原平均海拔在4000米以上,是一個(gè)獨(dú)特的地區(qū)，高原的河谷海拔較低,四季溫暖，種植業(yè)主要分布在河谷地帶，影響的因素主要是地形，故選A。

【2】青藏地區(qū)由于海拔高，氣溫低，種植業(yè)主要分布在河谷地帶，因?yàn)樵诤庸鹊貛崃枯^充足，其中青海省的河谷農(nóng)業(yè)主要分布在湟水谷地，西藏自治區(qū)的河谷農(nóng)業(yè)主要分布在雅魯藏布江谷地，故選A。

【3】在青藏地區(qū)嚴(yán)酷的高寒條件下，可以種植的農(nóng)作物有耐寒的青稞和豌豆等農(nóng)作物，水稻和甘蔗屬于亞熱帶、熱帶農(nóng)作物，棉花、玉米和大豆不適宜在青藏地區(qū)種植，故選C。

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