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白叶枯病菌侵入水稻之后,其在稻体内的活动与病害发生发展和为害程度等有密切关系,对具有系统和多次侵染的白叶枯病来说,蘖、叶个体的发病乃是群体发病的基础,因此在研究病菌稻体内的运行情况,对深入揭示侵染循环和发病规律,探讨正确的防治对策,具有很重要的意义。这里报导的是病菌自叶片不同位置侵入后它在叶内运行情况的观察结果。一、材料与方法供试水稻为汕优二号。种子先用万分之三的酸性异汞液浸24小时,洗净催芽后于1979
After invade rice, its activity in the rice body is closely related to the development and damage degree of the disease. For the bacterial blight with systematic and multiple infection, the incidence of tillers and leaves is Therefore, it is of great significance to study the operation of the disease-causing rice in vivo and to reveal the rules of infection cycle and pathogenesis in depth and explore the proper countermeasures for prevention and treatment. What is reported here is the observation that the pathogen is functioning within the leaf after the germ has invaded from different positions on the leaf. First, the materials and methods for testing rice Shanyou two. Seeds were first soaked for 24 hours with an acidic mercury solution of three ten thousandths, and after germination was washed in 1979