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一、简况水稻的病害有:稻瘟广、稻纹枯病、稻白叶枯病、稻恶苗病、稻胡麻斑病、和菌核病、稻矮缩病……等等。对我国来讲,前三者危害很大。稻瘟病和稻纹枯病是由特定的真菌侵染引起的,稻白叶枯病是由细菌侵入引起的。引起稻白叶枯病的细菌,叫做稻白叶枯病黄杆菌(Xanthomonas oryzae)。它是一种单极毛状细菌,一端生鞭毛一根,菌落元形,蜡黄色,表面光滑有光泽。它在稻谷和稻草中越冬。抪种病谷,病菌就会侵害幼苗的根和芽鞘而发病,插秧时,病菌随之带入本田。或者在育秧
First, a brief history of rice diseases are: rice blast wide, rice sheath blight, rice leaf blight, rice stump disease, rice Hu spot, and Sclerotinia, rice dwarf disease ...... and so on. For our country, the first three are very harmful. Rice blast and rice sheath blight are caused by specific fungal infestations, and bacterial blight is caused by bacteria. The bacterium that causes rice bacterial leaf blight is called Xanthomonas oryzae. It is a unipolar hairy bacteria, one end of a flagellum, colony element, wax yellow, smooth and shiny surface. It is winter in rice and straw.抪 kinds of disease Valley, the bacteria will infringe the seedling’s roots and buds sheath disease, transplanting, the bacteria will be brought into Honda. Or in seedling