黑星病又称疮痂病、雾病,侵害梨树叶片、叶柄、果实、花序、芽鳞、新梢等部位。发病严重时造成果树大量提早落叶,果实遍布病斑,严重削弱树势,影响果品产量和质量。近年来黑星病对红南果梨为害十分严重,给果农造成较大的经济损失。我们于2003～2004年对辽宁省凤城市红南果梨黑星 Scab, also known as scab, fog disease, damage pear leaves, petioles, fruits, inflorescences, bud scales, shoots and other parts. Severe disease caused by a large number of early fruiting leaves, the fruit is all over the lesion, seriously weaken the tree vigor, affecting fruit yield and quality. In recent years, scab has a very serious damage to the red pears and pear, causing great economic losses to the growers. We in 2003 and 2004 on the phoenix city of Liaoning Province Hongnan pear black star