气候生产潜力是指一个地区光、热、水等要素的数量及其配合协调程

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更新 2022-09-03
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气候生产潜力是指一个地区光、热、水等要素的数量及其配合协调程度。下图示意中国东北地区玉米气候生产潜力的空间分布。读下图完成下列各题。

影响甲处等值线向北凸出的主要因素是

A．纬度位置	B．大气环流
C．地形因素	D．海陆分布

在中国东北地区，与玉米气候生产潜力空间变化规律基本一致的指标是

A．≥10 ℃积温	B．日照时数
C．太阳辐射量	D．年降水量

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