怎样防治桃树红叶病答四川读者刘佳桃树红叶病主要是由于缺钾引起的。桃树对钾的需求量大。若桃树缺钾时，首先表现在叶子上，最初叶缘为紫红色，其后整个叶片呈紫红色，即所谓红叶病。在春季萌芽时，叶小、色淡，且皱缩卷曲，新梢少而细短。严重时，叶片纵卷，弯曲成镰刀... How to prevent peach tree leaf disease answer Sichuan readers Liu peach tree leaf disease is mainly caused due to potassium deficiency. Peach demand for potassium is large. If the peach potassium deficiency, the first manifestation of the leaves, the initial leaf margin is purple, then the entire leaves were purple, the so-called red leaf disease. When budding in spring, the leaves are small, pale, and curly curly, with few short shoots. In severe cases, the leaves are curled and bent into sickles.