一、温州蜜柑缺镁症 1、症状特征镁元素可在植物体内流动。缺镁症状在老叶和结果过多枝的叶上,发现较多,在果实肥大成熟中,也容易发生。叶的中脉平行的叶片部分开始黄化,发病初期,叶片尖端叶缘部残留有绿色,但病情加深后,整个叶面退色黄化。有缺镁症状的叶子,在冬季容易落掉,是树势变弱的因素。 First, Wenzhou mandarin deficiency magnesium disease 1, the symptoms of magnesium elements can flow in the body. Magnesium deficiency symptoms in the leaves and the results of too many branches of the leaves, found more in the fruit maturity, but also prone to. Leaf parallel to the midrib part of the leaf began to yellow, early onset, leaves the tip of the leaves remain green, but the disease deepened, the entire leaf fade yellow. Leaf magnesium deficiency symptoms fall easily in the winter, is the weakening of the tree factors.