轮纹病Physalospora piricora Nose是苹果重要病害之一。特别近几年来, 在多雨年份,或湿度较大的沿海湖泊地带,以及地势低洼、通风透光不良的平原果园, 发病较重,甚至成灾,对果品生产威胁较大。 78年全省雨水较多,有利病害流行,致使 三亿斤苹果毁于该病。同年济南果树园艺场,年 Physalospora piricora Nose is one of the major diseases of apple. In recent years, in the wet years or the coastal wetlands and the plains orchards with low-lying and poorly ventilated and poor light, the incidence is heavy or even catastrophic, threatening the fruit production. 78 years more rain in the province, favorable prevalence of diseases, resulting in 300 million pounds of apples destroyed in the disease. In the same year, Jinan fruit garden, years