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【题目】枸杞是宁夏五宝之一,而宁夏境内的中宁县是我国著名的枸杞之乡,已经有600多年的种植历史。中宁地区土壤碱性重,昼夜温差大,这样的自然条件适合枸杞的生长。根据材料回答下列问题。

【1】该地区枸杞质地优良的重要自然原因是

①科技创新培育优质品种

②日照时间长,光照充足

③水源充足,黑土肥沃

④昼夜温差大,养分积累多

A.①② B.②③ C.①④ D.②④

【2】该地区农业发展过程中带来的生态问题是

①坡地开荒导致水蚀严重

②过度开垦导致土地荒漠化

③不合理灌溉导致土壤盐碱化

④农业结构调整导致酸雨增加

A.①② B.①④ C.②③ D.②④

【答案】

【1】D

【2】C

【解析】

试题分析:

【1】宁夏位于我国西北干旱、半干旱地区,日照时间长,光照充足,昼夜温差大,养分积累多,是该地区枸杞质地优良的重要自然原因。故选D。

【2】宁夏平原位于黄河沿岸,不合理灌溉导致土壤盐碱化;地处西北干旱、半干旱地区,过度开垦导致土地荒漠化。故选C。

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