苹果轮纹病又称粗皮病、轮纹褐斑病,是苹果重要病害之一。此病侵染果实,常造成重大损失,枝干染病严重时,树势削弱直至死亡。该病菌在被害枝干上越冬,次年4月以后,产生大量分生孢子,借风雨传播侵染。菌丝体在病斑上存活多年,以2至3年的菌丝产生孢子的能力最强。分生孢子4月下旬开始 Apple rot disease, also known as skin disease, whelk brown spot, is one of the important diseases of apple. The disease infects the fruit, often resulting in significant losses, branches serious illness, the tree potential weakened until the death. The bacteria in the victims of winter branches, the following year after April, produce a large number of conidia, spread by wind and rain infection. Mycelia survive on the plaque for many years, with 2 to 3 years mycelia have the strongest ability to produce spores. Conidia begins in late April