题目内容

【题目】气候与农业生产的关系密切。结合所学知识完成下面小题。

【1】大多数农作物活跃生长需要日平均气温稳定上升到（　　）

A.0℃B.5℃C.10℃D.15℃

【2】各地活动积温不同，农作物的品种和熟制也不同。合肥地区主要的粮食作物及熟制是（　　）

A.小麦，一年一熟B.水稻，一年两熟

C.玉米，两年三熟D.谷子，一年三熟

【答案】

【1】C

【2】B

【解析】

【1】大多数农作物活跃生长需要日平均气温稳定上升到10℃以上。我们把一年中≥10℃持续期内的日平均气温累加起来，得到的温度总和，称为活动积温。故选：C。

【2】合肥位于秦岭、淮河以南，该地区位于亚热带，主要的粮食作物是水稻，其作物熟制是一年两熟。故选：B。

该题考查我国的气候对农业的影响，分析解答即可。

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