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水稻白叶枯病是由病菌 Xanthomonas oryzae 自水稻叶的伤口和水孔等自然孔口侵入,在导管内繁殖的病害,是仅次于稻瘟病、纹枯病的水稻三大病害之一。当感染时,最初在叶缘生成黄色小斑点,随后渐渐扩大,形成沿维管束的波形的黄白色条斑。严重发病情况下,整个叶子变白枯死,这样的病征称为叶枯症。此外,本田移植1～3周后,整株水稻急剧萎蔫而枯死的病状称为萎蔫症。在东南亚,常常发生萎蔫症,使水稻受到很大的危害,它是热带
Rice bacterial blight is one of the three diseases of rice which is second only to rice blast and sheath blight, which is caused by the pathogen Xanthomonas oryzae invaded from the natural orifices such as the wound and water hole in rice leaves. When infected, a small yellowish spot initially develops at the leaf margin, which then gradually enlarges to form a yellow-white streak along the waveform of the vascular bundle. Serious cases of disease, the entire leaves white and dead, such symptoms are called leaf blight. In addition, Honda 1 to 3 weeks after transplantation, the whole plant wilted wilting and wilting the disease known as wilt disease. In Southeast Asia, wilting often occurs, so that rice is greatly harmed, it is tropical