一、苹果缺钙症状1.根系表现:形成分枝短粗根群,严重时根尖端死亡。2.枝叶表现:结果树新梢过早停止生长,幼叶卷曲,叶边缘发黄,叶中脉有坏死斑点。3.果实缺钙症状:从果实近成熟开始,随着时间的延长病状进一步扩大蔓延,果实表面出现小的棕色坏死斑点,果肉缩 First, the symptoms of calcium deficiency in apple 1 root performance: the formation of short stout root groups, severe root tip death. 2. Foliage performance: the results of the new shoots stopped growing too early, young leaves curly, yellow leaves edge, leaf necrosis spots in the veins. 3. Fruit Calcium deficiency symptoms: from the fruit near maturity, with the extension of the spread of the disease spread further, the surface of the fruit appear small brown necrosis spots, fruit shrinkage