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番茄叶子变紫色怎么办
更新时间: 2020-09-27 00:00:00  

番茄叶子变紫色的两种原因:

1、幼苗缺磷,下部叶变绿紫色,并逐渐向上部叶扩展,施加使用磷酸二氢钾肥,增加土壤中的磷元素含量,改善作物缺磷情况;

2、低温,低温导致作物发紫,可以增加大棚内温度,保持温度为番茄适合范围;

3、施肥和提高温度共同作用,使番茄叶子变紫情况更快改善。

关键词: 番茄 叶子 紫色 怎么办

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