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为什么菜花会变紫
更新时间: 2020-09-23 00:00:00  

菜花变紫的发生原因:与花球形成后突遇低温有关,是花球组织内醣甙转化为花青素所致。秋季栽培花椰菜,花球临近成熟时,由于温度降低,花球内产生大量花青素,使花球变为紫色。

防治对策:在结球期间加强栽培管理,在低温天气来临和骤然降温之前进行短期的拱棚薄膜覆盖,以避免植株受到连续低温危害。 在花球生长期遇低温,要考虑盖球防冻,另外对过小花球植株进行假植。

关键词: 为什么 菜花

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