梨树黑星病是梨树的一种主要病害。在各地梨产区均有不同程度发生，严重年份重病园病果率高达８５％一叨％，几乎有产无收，给梨果生产造成重大损失。赵县范庄园艺场梨园通过几年的观察分析总结出：在梨黑星病防治上应抓好三个关键期。一是休眠期，二是幼果期，三是近成熟期。 Pear scab is a major disease of pear trees. Pear growing areas all over the country have varying degrees of occurrence. In severe years, the incidence of sick fruit trees is as high as 85% to 100% in serious years with almost no crop in the crop, causing heavy losses to the production of pear fruit. Zhaoxian Fan Zhuang Horticultural Pear Garden through years of observation and analysis concluded that: pears scab control should pay attention to three key issues. One is the dormant period, the second is the young fruit period, the third is the near maturity period.