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前人研究证明:水稻凋萎型白叶枯病与常见的缘叶型白叶枯病都是白叶枯病细菌Xanthomonas oryzae引起。凋萎型为害性比缘叶型严重。1950年在印度尼西亚首先发现。以后在菲律宾(1964)、斯里兰卡(1969)、马来西亚、印度、泰国(1970)、日本(1974)、南朝鲜(1976)等先后发生。我国于1975年在海南岛发现,据1977年各地不完全统计已有12个省(市),自治区先后发生,面积达数十万亩。仅湖南一省发病面积即达20多万亩。北方报导不多,仅在1978年辽宁个别病田,见到凋萎型零星病株。
Previous studies have shown that both the bacterial wilt disease and the common leaf blight are both caused by Xanthomonas oryzae. Withered type of damage than the edge of the leaves of serious. First discovered in Indonesia in 1950. Later in the Philippines (1964), Sri Lanka (1969), Malaysia, India, Thailand (1970), Japan (1974), South Korea (1976) took place successively. Our country discovered in Hainan Island in 1975, according to incomplete statistics in all parts of 1977, 12 provinces (municipalities) and autonomous regions have occurred, covering an area of several hundred thousand mu. Only a province of Hunan Province, the incidence of up to 20 million mu area. In the north, there were not many reports of it. Only in individual cases in Liaoning Province in 1978 saw withered and sporadic disease.