水稻白叶枯病是一种细菌性病害,为国内植物检疫对象。我区于1964年在前南阳湖农场首次发生,当年发病面积不足1亩。1965年扩大到800亩,1966年发展到2500亩,1972年遍及全区几十万亩稻田,发病后一般减产20—30％,重病田减产达50％以上。1971年在鱼台县谷亭公社解放大队五队测定,桂花黄品种叶片枯死三分之二者比健株千粒重降低45.4％,秕谷率增加3.07倍;叶片桔死三分之一者比健株千粒重降低21.2％, Rice bacterial leaf blight is a bacterial disease, the object of domestic phytosanitary. My district in 1964 in the former Nanyang Lake farm first occurred, when the incidence of less than 1 acre. It was expanded to 800 mu in 1965 and 2,500 mu in 1966. In 1972, hundreds of thousands of mu of paddy fields were spread throughout the region. After the onset of disease, the output was reduced by 20-30% and that of severe diseases reduced by more than 50%. In 1971 in Yutai County Gu Ting Commune Liberation Brigade five teams measured, sweet-scented osmanthus yellow varieties two-thirds of the dead than the thousand plant weight loss of 45.4%, the rate of tamarisse increased 3.07 times; one-third of the leaves die orange than healthy Strains weight decreased by 21.2%