白叶枯病是我国南方稻区特别是我省的重要水稻病害。由于它是一种维管束的细菌病害,发病时期往往适逢台风雨季节,药剂防治难以达到理想的效果,因此选育抗病品种是白叶枯病综合防治的根本措施,而病原菌系的研究则是抗病育种的基础研究。1981年我们已初步查清广东省白叶枯病病原菌系类型和分布情 Bacterial leaf blight is an important rice disease in southern rice area in our country, especially in our province. As it is a bacterial disease of vascular bundles, the onset of the disease is often in the typhoon rainy season, pharmaceutical control is difficult to achieve the desired effect, so breeding resistant varieties is the fundamental measure against bacterial leaf blight comprehensive prevention and control, and pathogenic strains It is the basic research of disease-resistant breeding. In 1981, we have initially ascertained the types and distribution of bacterial blight in Guangdong Province