古时文化中心在北方中原一代，雨水较少。也没有大的水利工程和深井调节缓解，基本靠天吃饭。

来源: Dayoufan 于 2024-02-29 11:15:47 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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