灌溉液不同pH值对椰糠种植番茄的影响

Jiangsu Agricultural Sciences(2019)

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Abstract
在玻璃温室内用椰糠种植番茄,研究灌溉液不同pH值对番茄生长发育等的影响.结果表明,灌溉液pH值在5.2~6.7之间对番茄的生长整体影响不大;流出液EC值与pH值大致呈负相关关系,流出液EC值越高,pH值越低;随灌溉液pH值的增加,番茄叶片对磷的吸收减少,对钙的吸收增加;灌溉液pH值为5.7时,番茄叶片对钾的吸收有促进作用,但同时对钙、镁的吸收受到抑制.综合流出液pH值变动范围、单叶质量、穗质量,确定灌溉液pH值以5.7~6.2为最佳.
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