EPISODE · May 4, 2026 · 17 MIN
農讀EP.18：缺鎂？缺氮？新手弄不清楚！葉脈留綠、葉肉變黃，老葉說的秘密你看懂了嗎
from 農.讀 · host 阿德
老葉黃化是農民最常見的困惑，如果先補氮卻遲遲沒有改善，問題很可能出在鎂元素的缺乏或吸收受阻。本集農讀從鎂是葉綠素核心原子出發，說明鎂為可移動元素、缺乏從老葉開始的原理，並深入解析缺鎂與缺氮最關鍵的診斷差異：缺鎂呈葉脈留綠、葉肉黃化的網狀圖案，缺氮則是整片均勻黃化。同時提示台灣農民最常忽略的兩大拮抗問題——鉀鎂拮抗與鈣鎂拮抗，說明土壤鎂含量正常卻缺鎂的真正原因，以及為何往土壤補鎂容易無效，葉面噴施鎂才是推薦的解方，幫助果菜類與果樹農友從根本解決缺鎂診斷與補救的問題。 有問題找阿德：[email protected] -- Hosting provided by SoundOn
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農讀EP.18：缺鎂？缺氮？新手弄不清楚！葉脈留綠、葉肉變黃，老葉說的秘密你看懂了嗎
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