農民能吃飽有兩個因素不能忽視：糧食因品種改良單產成倍增加；青壯農民工大量進城。

來源: wbnryb 於 2012-12-21 21:36:42 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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