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西瓜为什么中间甜边上不甜
更新时间: 2020-09-22 00:00:00  

因为西瓜生长时,营养主要从瓜蒂输入,在从西瓜瓜瓤的木质部输送到西瓜各部位,西瓜中间甜的部分是种子胎座发育而成的,外边不甜的部分是由中果皮和内果皮发育而成的,中间糖份最多,所以最甜。

关键词: 西瓜 为什么 中间 边上

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