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水稻白叶枯病是亚洲地区较普遍的一种水稻病害。至今,欧、非、美洲尚鲜有报导。在亚洲,此病最早发生于日本南部,以后蔓延到日本全国各地区。自日本发现此病害后,相继在朝鲜半岛及菲律宾也有该病发生的报导。除上述地区、国家之外,据近年来的调查,白叶枯病在印度、巴基斯坦、斯里兰卡、柬埔寨、越南、马来西亚、以及澳大利亚等国也有发生。对于白叶枯病的防治,日本由于长期以来缺乏高效的防治药剂,故一向比较重视抗病品种的选育。在东南亚各国,在六十年代以后,随着高产、
Rice bacterial leaf blight is a common rice disease in Asia. So far, Europe, Africa and the Americas are still rarely reported. In Asia, the disease first occurred in southern Japan and later spread to all parts of Japan. Since the disease was discovered in Japan, one after another in the Korean Peninsula and the Philippines also reported the disease. In addition to the above regions and countries, bacterial blight in recent years has also been reported in India, Pakistan, Sri Lanka, Cambodia, Vietnam, Malaysia and Australia. For the control of bacterial blight, Japan has always placed more emphasis on the selection and breeding of resistant varieties due to the lack of efficient control agents for a long time. In Southeast Asian countries, after the 1960s, with the high yield,