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水稻褐条斑病是一种细菌性病害,过去我省尚无报道。1974年我们在天门县发现此病,并在该县病虫测报站的协作下进行了初步观察。 发病特点:褐条斑病主要为害早稻,4月初至6月底是发病与流行的最盛季节。秧苗期,该病主要为害叶片、叶鞘。病斑多发生在主脉上,长条形,与主脉等宽,褐色或黄褐色,部分病斑可延伸到叶鞘。秧苗出现第一片真叶时即可遭到危害,病株色黄纤细,叶节较稀;有的病苗叶片卷成筒形,致使后生叶不易抽出。发病重的,秧苗枯萎死亡;轻的,又瘦又小,成为脚秧。
Rice leaf spot is a bacterial disease, in the past there was no report in our province. In 1974, we found the disease in Tianmen County and carried out a preliminary observation under the cooperation of the county’s pest forecasting station. Incidence of disease: Monocots disease is the main damage to early rice, early April to the end of June is the peak season of onset and prevalence. Seedling stage, the main damage leaves, leaf sheaths. Lesions occur in the main veins, elongated, with the main pulse width, brown or tan, part of the lesion can be extended to the sheath. Seedlings appear when the first true leaves can be endangered, diseased plants slender yellow, leaf sections more dilute; some sick leaves rolled into a cylinder, resulting in posterior leaves is not easy to extract. Severe disease, seedlings withered death; light, thin and small, become foot seedlings.