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苹果树腐烂病是由真菌引起的一种毁灭性病害,发展快,为害大,严重地威胁着苹果的生产。我场一园二区1959年定植的苹果树已惨不忍睹,全场果园发病率也令人吃惊,据1982年春季调查,全场仅有的30982株大树,就有27437株感病,占大树总数的88.5％;总病疤数高达170,332块,株均6.2块。以往我们也采取了刮治、涂抹药剂、
Apple tree rot disease is a devastating disease caused by fungi, which develops rapidly and causes serious harm to the apple production. I field a garden two districts 1959 planted apple trees have appalling, the audience of the orchard’s incidence is also surprising, according to the 1982 spring survey, the only audience of 30,982 trees, there are 27,437 strains of susceptible, accounting for large 88.5% of the total number of trees; the total number of scar was as high as 170,332 and the average number of trees was 6.2. In the past we also took a cure, smear Pharmacy,