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  • 甜瓜种植技术ppt课件-在线浏览

       2026-03-07 网络整理佚名1580
    Key Point:【正文】延续至果实成熟。钙和硼不仅影响果实糖分含量,而且影响果实外观,钙不足时,果实表面网纹粗糙,泛白,缺硼时果肉易出现褐色斑点。
     
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