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梨黑星病Ｖｅｎｔｕｒｉａｎａｓｈｉｃｏｌａ是豫东地区梨树的主要病害，近几年，发病呈上升趋势。因此，笔者于１９９５～１９９８年对梨黑星病的发病规律及防治技术进行了试验研究，初步探索出一套有效的防治措施。１为害概况１９９６年开封市梨黑星病大流行，此次发生早，
Venturianashicola is a major disease of pear trees in eastern Henan. In recent years, the incidence of the disease is on the rise. Therefore, in 1995 to 1998, the author carried out experimental research on the pathogenesis and prevention and cure of pear scab and initially explored an effective prevention and control measures. 1 Harmful Overview Pear scars in 1996 Kaifeng pandemic, the occurrence of early,