苹果早期落叶病是苹果褐斑病、斑点落叶病、轮纹病的通称,其中最常见和危害最严重的是斑点落叶病和褐斑病,是生产中最严重的苹果叶部主要病害,文章较详细的介绍了苹果落叶病的病因、症状、发生规律及防治。 Apple early deciduous disease is apple brown spot, spotted leaves disease, the common name for rotifers, of which the most common and the most serious is the speckle leaf spot and brown spot, is the production of the most serious apple leaf disease, the article More detailed description of the causes of apple deciduous disease, symptoms, occurrence and prevention and treatment.