水稻胡麻斑病在水稻整个生育期都可发生。病菌以菌丝和分生孢子在病谷和病稻草上越冬,次年稻草上的分生孢子借风传播到秧田和大田,由稻苗表皮或气孔侵入。播种病谷,谷壳上潜伏的菌丝能直接侵害幼苗。在水稻整个生长期间,病株上形成的大量分生孢子 Rice flage spot can occur throughout rice growth. Mycotoxins and conidia in the pathogenic bacteria and sick straw overwintering, the following year on the straw condiospores spread by wind to the fields and fields, from the rice seedling epidermis or stomatal invasion. Sowing diseased valley, latent hyphae on the chaff can directly affect seedlings. During the entire growth of rice, a large number of conidia formed on diseased plants