苹果轮纹病是造成田间和贮藏期大量烂果的严重病害。山东近几年来,尽管注意了防治,每年仍有3—5亿斤苹果烂在果园中,造成这种现象的主要原因,是对侵染来源的广泛认识不清,致使忽略了病原来源的广泛剷除。1988年在泰安市附近,分离到以下代号的病菌:1号-苹果干腐病菌(Macrophoma Kuwa-tsukaii Hara)、2号-柳枝枯病菌(M.salicina Sacc·)、3号-刺槐枝枯病菌(M.sophorae)、4号-杨树枝枯病菌(M.tumeifaciens)、5号-山楂干枯病菌(M.kawatsukia)6号-桃干腐病菌(M.ma- The apple rot disease is a serious disease that causes a large number of rotten fruits in the field and during storage. In recent years, despite the prevention and control measures in Shandong, there are still 3-5 billion kilograms of apples rotting each year in the orchards. The main reason for this phenomenon is the widespread ignorance of the source of infection, which has led to the omission of a wide range of sources of pathogens eradicate. In 1988 near the city of Tai’an, the following code-named germs were isolated: No. 1 - Macrophoma Kuwa-tsukaii Hara, No. 2 - M. salicina Sacc, No. 3 - M.sophorae, No. 4 - M. tumeifaciens, No. 5 - M.kawatsukia No. 6 - M.ma-