请问水稻的积温(heat number)大概是多少?
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![请问水稻的积温(heat number)大概是多少?](/uploads/image/z/6550819-43-9.jpg?t=%E8%AF%B7%E9%97%AE%E6%B0%B4%E7%A8%BB%E7%9A%84%E7%A7%AF%E6%B8%A9%EF%BC%88heat+number%EF%BC%89%E5%A4%A7%E6%A6%82%E6%98%AF%E5%A4%9A%E5%B0%91%3F)
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