答山西省平陆县读者阙红蕾苹果小叶病是缺锌引起的生理病害。一般在破地、盐碱地和贫瘠的山地果园比较常见。苹果缺锌小叶病以早春表现最为显著，病技发芽比较晚，顶部数芽能前发，下部芽稍露绿即停止生长，顶部芽虽萌发，但抽捎、长叶均不正常，节间短，叶片狭小（多呈轮生状 A Pinglu County, Shanxi Province readers Que Honglei Apple leaflet disease is caused by zinc deficiency physiological diseases. Generally broken, saline and barren mountain orchards are more common. Zinc deficiency in apple leaves showed the most significant effect in early spring. The disease and disease germination was relatively late. The top of several buds could be foregrowth and the lower buds dew greenish to stop growth. Although the top buds germinated, Short, narrow leaves (mostly whorls