桃树烂根原因很多,有侵染性的,也有非侵染性的。但由镰刀菌(Ｆｕｓａｒｉｕｍｓｐ)引起的烂根近几年在山东部分桃树栽培区较为严重,不仅为害桃树,还为害杏、李、葡萄等,个别地区也相当严重,常造成大面积死树。在泰安、淄博、青州三市重病区调查,平均感病指数为54.7,对桃的产量 Rotten roots of peaches for many reasons, invasive, but also non-invasive. However, the rotten roots caused by Fusarium sp are more serious in some peach cultivation areas in Shandong in recent years. They not only damage peaches but also apricot, plum and grape, and some areas are also quite serious. They often cause large dead trees . In Tai’an, Zibo, Qingzhou three ward survey, the average susceptibility index was 54.7, the yield of peach