中国的化肥和农药用量从1949到现在增加了6-7倍, 粮食产量增加了近5倍, 化肥农药贡献了6-7成。

来源: wwni60 于 2022-09-15 05:14:19 [旧帖] [给我悄悄话] 本文已被阅读：次

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