EPISODE · Apr 30, 2026 · 16 MIN
農讀EP.16：鉀肥的全能守衛-用對了，作物抗病抗旱；用錯了，鎂先撤給你看
from 農.讀 · host 阿德
鉀肥是作物抗病、抗旱與品質提升的關鍵元素，但用錯種類或用量過多，反而會引發鉀鎂拮抗問題，讓作物陷入缺鎂黃化卻容易誤判為缺氮的診斷困境。這集阿德來深入介紹鉀的氣孔調控抗旱機制與木質素合成抗病機制，並詳細比較氯化鉀與硫酸鉀的差異，說明果菜類長期施用氯化鉀造成氯離子累積與氮素吸收受阻的問題。最重要的知識點是：鉀鎂拮抗發生在根系載體蛋白的競爭環節，解法不是往土壤補更多鎂，而是改用葉面噴施硫酸鎂繞過競爭，幫助農友真正把鉀肥的效益最大化，同時避免連帶造成的缺鎂損失。 有問題找阿德：[email protected] -- Hosting provided by SoundOn
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農讀EP.16：鉀肥的全能守衛-用對了，作物抗病抗旱；用錯了，鎂先撤給你看
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