1959年5月間,在杭州早稻生长的前期,叶片和叶鞘上发現一种新的病害。病斑最初暗綠色,以后呈黑褐色,带棱形,病斑的外形与稻瘟病有些相似,严重时引起稻株的枯死。浙江农业科学研究所王志正同志认为是一种細菌性病害。寄来的标本,經过显微鏡检查,进一步确定是細菌性病害,并且細菌主要集中在病斑中央的組織中。从病叶上分离到一种菌落白色而产生大量螢光性色素的細菌。同年7、8月間,黑龙江的合江农业科学研究所黄桂明同志也寄来一种在东北很流行的水稻細菌性病害,主要为害叶片、苞叶和叶鞘,症状和杭州发现的病害非常相似(图1)。經过分离培养也得到菌落白色而有螢光性色素的細菌。 In May 1959, a new disease was found on leaves and leaf sheaths in the early stage of early rice growth in Hangzhou. Lesions initially dark green, later dark brown, with a prism, the shape of the lesion is somewhat similar to the rice blast, causing severe death of rice plants. Zhejiang Institute of Agricultural Sciences Comrade Wang Zhizheng think it is a bacterial disease. The sent specimens, after microscopic examination, were further identified as bacterial diseases, and the bacteria were mainly concentrated in the tissues of the lesion. Isolated from the diseased leaves of a colony white and produce a large number of fluorescent pigment bacteria. In July and August of the same year, Comrade Huang Guiming of Hejiang Agricultural Science Institute in Heilongjiang Province also sent a bacterial disease that is very prevalent in the northeast of China. The disease mainly affects leaves, bracts and leaf sheaths, and the symptoms are similar to those found in Hangzhou (Figure 1). After isolation and culture also get colony white and fluorescent pigment bacteria.