苹果树腐烂病是我国苹果产区的重要病害,往往造成苹果园毁灭。我场1958年定植的第一果园感染腐烂病植株已占到90％。1961年秋季定植的第二果园感染植株也达到30％以上,近几年来腐烂病的迅速蔓延,严重影响到苹果的产量、质量和果树的寿命,构成对我场能否生存的严重威胁。为此,今 Apple tree rot disease is an important disease in China’s apple producing areas, often resulting in the destruction of apple orchards. My field 1958 colonization of the first orchard rot infected plants accounted for 90%. In the autumn of 1961, the second orchard infected plants also reached more than 30%. In recent years, the rapid spread of rot disease seriously affected the yield and quality of apple and the life span of fruit trees, posing a serious threat to the survival of our field. To this end, today