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水稻白叶病的综合症状有三种类型,即白叶枯、凋萎、黄叶。以凋萎型危害性最大。据我们观察,水稻苗期和本田分蘖期都可发生,其症状是:类似螟害枯心、枯鞘,失水青枯凋萎。镜检病鞘和根,有“菌溢”现象,纵剖发病茎基,可挤出蜡黄色菌脓。发病前期无异样臭味。过去元江曾称“水稻细菌性枯萎病(Xantnhomonas sp)”,化念称“脓包病”,我们称“早期白叶枯病”。据报道:本症状常发生于东南亚国家,早在1950年印尼发现;近年国内杂交稻上不断发现,制种基地海南岛于1973年发现,后
There are three types of rice leaf disease syndromes, namely, leaf blight, withered, yellow leaves. To wither the most harmful. According to our observation, rice seedling stage and Honda tillering stage can occur, the symptoms are: similar to borer withered heart, dead skin sheath, dehydration wither withered. Microscopic examination of the sheath and root, a “bacteria spill” phenomenon, the vertical incidence of stem base, waxy bacteria can be extruded pus. No abnormal odor before the onset. In the past, the Yuanjiang once called “Xanthomonas sp”, which is called “pustular disease” and called “early bacterial blight”. It is reported that: The symptoms often occur in Southeast Asian countries, as early as 1950 Indonesia found that in recent years, continuous discovery of hybrid rice in China, seed base Hainan Island was discovered in 1973, after