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【题目】读我国某地区农事安排表,回答下列各题。

第一年

第二年

第三年

月份

10

11

12

1

2

3

4

5

6

7

8

9

10

11

12

1

2

3

4

5

6

7

8

9

作物

作物Ⅰ

作物Ⅱ

冬季休耕

作物Ⅲ

1作物Ⅰ、Ⅱ、Ⅲ可能的组合是

A. 油菜、玉米、小麦 B. 小麦、玉米、棉花

C. 甜菜、玉米、大豆 D. 小麦、棉花、大豆

2对本地区农业生产的相关描述正确的是

A. 本地熟制为一年一熟 B. 地形起伏大是农业生产的不利条件

C. 春旱严重是盐碱化的重要成因之一 D. 肥沃的黑土是农业高产的有力保障

【答案】

1

2

【解析】试题分析:

1】根据表格中农作物的生长周期可知,作物秋季播种,越冬后夏初收割,应该是冬小麦;作物夏季播种,当年秋季收获,应该是夏播玉米,故选项B正确。

2】由表格可知该区域熟制为一年二熟或者二年三熟,故排除选项A;由于该地以种植业为主,应该位于平原地区,地形起伏小,故排除选项B;肥沃的黑土主要分布在三江平原、松嫩平原,当地是一年一熟,与表格不符,故排除选项D;小麦、玉米、棉花是我国华北地区的主要农作物,春旱降水少,气温回升快,蒸发旺盛,旱灾严重,加剧土壤盐碱化,所以春旱严重是盐碱化的重要成因之一,故选项C正确。

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