近几年，苹果轮纹病的发生日趋严重，不少果园在采收前后大量烂果。据调查，我市每年发生面积达１万ｈｍ２，平均烂果率近１８％，个别园严重年份高达７０％以上。全市每年因轮纹病烂果达４０００万ｋｇ，直接经济损失４０００万元，严重影响了果农的经济收入和生产积极性。众 In recent years, the occurrence of apple ring rot disease is more and more serious, many orchards in the harvest before and after a large number of rotten fruit. According to the survey, the annual area of ​​the city reached 10,000 hm2, with an average rate of nearly 18% of rotten fruits. In some serious years, the number of individual rotors was as high as over 70%. Each year, the city owns 40 million kg of rotten rot due to its annual economic losses and a direct economic loss of 40 million yuan, seriously affecting the economic income and production enthusiasm of the farmers. Public