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稻粒黑粉病,又称粒黑穗病。病原菌Ncovossia horrida(Tak)padw. et A. kahn[Tilletia barclayana(Bref.)sacc. et Syb],曾属于对外检疫对象。世界上除日本和美国外,出现于亚非及美洲许多国家;目前国内分布于四川、湖南、江西、浙江、江苏、安徽、广东、广西、福建、湖北、上海、贵州、云南。我省在1956年的全省农作物病虫害普查中并未发现。现已分布于玉溪、文山、昭通、怒江、西双版纳、临沧、大理、个旧等8个地(州)、市。玉溪地区自1981年发现以来,疫区有所扩展,危害也较大。估计还有扩大蔓延加重危害的趋势,是不可忽视的危险性病害。
Rice powdery mildew, also known as grain smut. The pathogen Ncovossia horrida (Tak) padw. Et A. kahn [Tilletia barclayana (Bref.) Sacc. Et Syb], once belonged to the external quarantine object. In addition to Japan and the United States, the world appears in many countries in Asia, Africa and the Americas. At present, it is distributed in Sichuan, Hunan, Jiangxi, Zhejiang, Jiangsu, Anhui, Guangdong, Guangxi, Fujian, Hubei, Shanghai, Guizhou and Yunnan. The province in 1956 the province’s crop pest survey did not find. Now distributed in Yuxi, Wenshan, Zhaotong, Nujiang, Xishuangbanna, Lincang, Dali, Gejiu and other eight prefectures (prefectures), city. Since the discovery of Yuxi area in 1981, the epidemic area has been expanded, causing greater damage. It is estimated that there is a trend of expanding the spread and aggravating the harm, which is a dangerous disease that can not be ignored.