苹果轮纹病是苹果果实的主要病害之一,对苹果的产量、质量及出口创汇影响很大。为了提高防治水平,减轻经济损失,山东省果茶技术指导站于1983—1985年,组织全省十四个市、地果树站,大面积 Apple ring disease is one of the main diseases of apple fruit, which has a great impact on apple output, quality and foreign exchange earnings. In order to improve the level of prevention and control and reduce economic losses, technical guidance station of tea in Shandong Province from 1983 to 1985, organized the province’s fourteen cities, fruit trees station, a large area