人口是康乾盛世的130年恢复和增长的。一是恢复，二是玉米地瓜土豆的引进使世界养活人口从4亿增长到40亿

来源: 老生常谈12 于 2025-01-05 06:58:41 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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