密，是根据具体庄稼。美国的玉米矮棵密植，中国的保持系矮棵高粱密植高产好吃。

来源: 老生常谈12 于 2022-11-04 11:21:27 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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