我区水稻白叶枯病自1966年开始发病以来,出现两个大流行周期,第一流行周期在70年代前期,1973～1975年为流行高峰年;70年代后期至80年代前期处于低谷时期,其中1979～1980年稍有回升。1985～1986年该病明显上升,80年代后期出现第二个流行周期,1987年在双晚上特大流行,1989年在中稻上大流行。现将近几年来水稻白叶枯病的发生动态及防治对策分述于后。 Since the onset of rice bacterial leaf blight in our district since 1966, two pandemic cycles have emerged. The first epidemic cycle was in the early 1970s and the peak was in 1973-1975. From the late 1970s to the early 1980s, In 1979 ~ 1980, a slight rebound. The disease markedly increased from 1985 to 1986, with a second epidemic cycle in the late 1980s, a pandemic in 1987 and a pandemic in mid-year rice in 1989. Now in recent years, the occurrence of rice bacterial blight and control strategies are described later.