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果锈病属非侵染性疾病，发生在苹果上。根据近年来的调查有逐年加重的趋势。在严重发生的年份锈果率达 90％～ 100％，果面着锈面积约 50％以上，严重降低苹果外观色泽，影响果品质量。 果锈的明显症状是在果面上产生铁锈状物。先期发生水浸状深绿色斑，多发生在果实顶部，
Fruit rust is a noninfectious disease that occurs on apples. According to the survey in recent years, there is a trend of increasing year by year. In the serious occurrence of rust rate of 90% to 100%, the rust area of about 50%, seriously reducing the appearance of apple color, affecting fruit quality. The obvious symptom of fruit rust is rust on the fruit surface. Early occurrence of flooding-like dark green spots, occurred in the top of the fruit,