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给水稻浇水时为什么要放水
更新时间: 2020-07-16 00:00:00  

水稻是水生植物,只有在有水的情况下,才能生长良好,尤其是水稻分蘖期需要大量的水分才能生长良好,在有水时也能保证施肥施药效果,达到高产。稻田也需要定期排水,否则水稻幼根因缺氧而变黑、腐烂。水稻在进化过程中适应了浅水环境中的氧含量,在浅水田中,水稻根本不会出现所谓的“幼根因缺氧而变黑、腐烂”的现象。

关键词: 水稻 浇水 为什么 放水

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