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    【题目】下列关于松嫩平原和长江三角洲自然地理环境对农业生产的影响，叙述正确的是( )

    A．两区域地势平坦开阔，利于农业机械化的实施，是我国重要的商品粮基地

    B．地带性土壤分别为红壤和水稻土

    C．长江三角洲因河网密布,湖泊众多,适合种植水稻且耕地集中连片

    D．松嫩平原农作物生长季节短,适合种植春小麦、玉米和大豆

    【答案】D

    【解析】

    试题分析：本题考查区域自然地理环境对农业生产的影响。松嫩平原地势平坦开阔，土地集中连片分布，人口又相对较少，人均耕地较多，是我国农业机械化水平最高的地区之一，是我国重要的商品粮基地；长江三角洲，河网密布，土地较为分散，不适合机械化作业，A错误；东北的地带性土壤为黑土，南方的地带性土壤为红壤，水稻土属于人工土壤，B错误；长江三角洲因河网密布,湖泊众多,适合种植水稻但农田较为分散，C错误；松嫩平原地处我国东北中部，属于温带季风气候，温暖季节短，生长期也短，主要种植玉米、春小麦、甜菜和大豆等，D对；

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