苹果早期落叶病包括褐斑病、斑点病和轮斑病三种,其中为害最重的是褐斑病。我省一般年份发生较轻,多雨年份受害严重。在多雨年分如防治失时或不防治,往往造成早期落叶,削弱树势,影响产量,并可导致腐烂病的加重。 Early apple deciduous disease, including brown spot, spot disease and spot disease three kinds, of which the most damaging is brown spot. The general year in our province occurred lightly, and the heavy rainy years were seriously affected. In rainy years such as control of lost time or non-control, often resulting in early deciduous, weaken the tree vigor, affecting the yield, and can lead to increased rot disease.