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稻曲病是水稻穗子谷粒上长出的一种“球状绿粒”,群众称为“谷菌子”。是一种子囊菌纲、球壳菌目、麦角菌科的真菌性病害侵染谷粒所致,近几年已由次要病害上升为主要病害之一。1983年绵竹县发生稻曲病面积19.3万多亩,占水稻面积46.6％。感病品种的病穗率一般达10％,高的达50％以上,病穗上的病粒数一般5粒,最多的达83粒。得病稻穗不仅空秕率增加,实粒数降低,产量下降,而且还影响米质,因此它是水稻生产上一个急待解决的问题。
False smut is a type of “globular green” grown on the ears of rice grains, which the masses call “gizzards.” Is an Ascomycete class, Globular, Occiputaceae fungal diseases caused by the infection of grain, in recent years has been the minor diseases have risen as one of the major diseases. In 1983, an area of 193,000 mu of smut was found in Mianzhu County, accounting for 46.6% of the total rice area. Sick ear disease rate of susceptible varieties generally up to 10%, up to 50% higher, sick panicle grain number generally 5, up to 83. Diseased panicles not only increase the rate of empty panicles, reduce the number of real grains, and reduce the yield, but also affect the quality of rice. Therefore, it is an urgent issue to be solved in rice production.