今年 ,郧县南化、白桑、黄柿、大柳等乡镇大面积发生了玉米锈病。发生面积 2 50 0 hm2 ,严重影响玉米后期籽粒灌浆而减产。玉米锈病在郧县大面积严重发生 ,这在郧县植保历史资料中尚无记载 ,尚属首次发现。6月 2 3日我们在南化镇鲍鱼村一组发现玉米锈病中心病株 ,8月下旬我们在 This year, Yunxian South, white mulberry, yellow persimmon, Dali and other towns in a large area of ​​corn rust. Occurrence area of ​​2 50 0 hm2, seriously affecting the late grain filling and yield reduction. Corn rust in Yun County large area of ​​serious occurrence, which is no record in Yunxian plant protection historical data, is the first time found. June 23rd, we found a group of abalone center in abalone village in Nanhua town. In late August, we were at