Unverified85% confidenceFactTime unknown
美国玉米的平均亩产从1950年代的约40蒲式耳飙升至如今的超过175蒲式耳
1
Sources
85%
Confidence
Long-term
Relevance
6/1/2026
First Seen
Sources
数据中心占用农田威胁粮食安全？数据告诉你真相
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