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稻瘟病是我区水稻的主要病害之一,1986年全区稻瘟病发生面积478.7万亩次,损失稻谷3754.35万公斤.实践证明,以培育和推广抗病品种为主的综合防治是防治稻瘟病的经济有效措施.本组已报道过稻瘟病菌类型和分布影响水稻品种的抗性,品种的布局.也影响稻瘟病菌生理小种的变异及类型的组成.因此,有必要不间断地研究稻瘟病菌生理小种的分布、变化和消长规律,为防治稻瘟病提供理论依据.
Rice blast is one of the main diseases of rice in our district. In 1986, an area of 4,787,000 hectares of rice blast occurred in the whole area, with a total loss of 37,543,500 kilograms of rice. Practice has proved that the integrated prevention and control based on cultivation and promotion of resistant varieties is the prevention and control of rice blast The group has reported that the type and distribution of Magnaporthe grisea affect rice varieties resistant to the layout of varieties also affect the physiological characteristics of Magnaporthe grisea race variation and type of composition.Therefore, it is necessary to study uninterrupted The distribution, variation and growth of physiological races of Magnaporthe grisea provide a theoretical basis for the control of rice blast.