1980～1984年共测福建省56县稻白叶枯病298菌株,据其致病力强弱划分为四个菌系群(Ⅰ—Ⅳ)。菌株和品种间的关系存在着数量级差异,尚未发现有明显的特异性反应,其分布特点有沿海强、山区弱的趋势。用Ⅱ—Ⅳ菌系群的13个菌株测定国内外部份水稻品种抗性,有15个品种表现强的抗病性。我省早、晚稻当家品种都为感病或中感品种。74—105品种表现高抗、耐淹,适宜在沿江沿海低洼易淹稻田推广种植。杂交稻威优6号、威优30、四优30为较好抗病组合,已在全省推广应用。 A total of 298 strains of rice bacterial blight in 56 counties of Fujian Province from 1980 to 1984 were divided into four strains (Ⅰ-Ⅳ) according to their virulence. There is an order of magnitude difference between the strains and cultivars, and no obvious specific reaction has been found yet. The distribution is characterized by strong coastal areas and weak mountainous areas. Thirteen strains of Ⅱ-Ⅳ strain were used to test the resistance of some rice varieties at home and abroad, and 15 varieties showed strong disease resistance. Early and late rice varieties in our province are susceptible or susceptible species. 74-105 varieties of high resistance, flooding, suitable for flooding paddy fields along the coastal low-lying popularization planting. The hybrid rice Weiyou 6, Weiyou 30 and Siyou 30 were better resistant combinations and have been widely applied in the province.