桃树黑星病,又叫桃黑痣病、桃疮痂病。我国各桃产区均有发生。由于该病的危害,常使果品质量变劣,效益降低。除桃外,还能侵害李、杏等核果类果树。现将其病害的症状、发生规律及防治方法介绍如下。 一、为害症状 发病部位以果实为主,其次为枝梢和叶片。5月份果实始发病。最 Peach scab, also known as peach scab disease. All of China’s peach producing areas have occurred. Due to the harm of the disease, the quality of the fruit is often deteriorated and the benefit is reduced. In addition to the peach, but also against Li, apricot and other stone fruit trees. Now the disease symptoms, occurrence and prevention methods are described below. First, the symptoms of disease-oriented parts of the main fruit, followed by shoots and leaves. May the onset of disease in May. most