苹果树腐烂病是我国苹果产区的主要病害,主要流行区在东北、华北、西北和山东等北部地区,豫西、皖北、苏北等地发生也较重。几十年来,北方苹果产区每每在周期性冻害之后(如1956—1957年,1975—1976年),病情上升,一直是苹果生产上的一个重要病害问题。我国对此病的研究从解放初期第一次大流行时开始。初期的工作主要是调查流行 Apple tree rot disease is the main disease of apple producing areas in our country. The main epidemic areas are in the northern areas of northeast, north, northwest and Shandong, but also in the areas of western Henan, northern Anhui and northern Jiangsu. For decades, the northern part of the apple producing area has often been an important disease in the production of apples after its periodic frost damage (1956-1957, 1975-1976). The study of this disease in our country started from the first pandemic in the early days of liberation. The initial work is mainly the investigation of the epidemic