几种蔬菜缺镁诊断与防治蔬菜作物缺镁后下位叶黄化表现形式不尽相同。下面列举几种蔬菜缺镁症状。番茄：叶片沿主脉两侧叶肉呈斑块状黄化或黄白化，叶尖、主脉和侧脉仍保持绿色。结果越多的枝条缺镁越严重。叶向内侧卷曲，缺乏严重时，叶脉枯萎，但幼叶仍不会黄化。茄子：... Several vegetable magnesium deficiency diagnosis and control of vegetable crops after the lower leaves of yellowing manifestations vary. Here are some vegetables magnesium deficiency symptoms. Tomato: Leaves along the main vein on both sides of the plaque was yellow or yellowish, leaf tips, the main vein and lateral veins remain green. The results of the more branches magnesium more serious. Leaf curl to the inside, lack of serious, veins withered, but young leaves will not be yellowed. eggplant:...