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稻曲病是水稻后期病害,主要发生在二季晚稻上。病菌于开花以后至乳熟期侵入谷粒,病菌侵入后在颖壳内形成菌丝块,使内外颖片稍为张开,合缝间长出黄绿色肉状突出物,渐渐地把整个颖壳包裹在其中,可比健粒大三、四倍,表面布满墨绿色粉状物。一穗中病粒少的有一、二粒,多的十余粒,最多的有三、四十粒。严重影响水稻产量。
False smut is the late rice disease, occurring mainly in the second season late rice. Bacteria invade after the flowering milky millet grains, bacteria invade the formation of mycelium in the glume, so that the internal and external glumes slightly open, between the long yellow-green meat protruding prominence, and gradually the entire chaff Wrapped in them, compared to Jianzhu three times, four times, the surface covered with dark green powder. A spike in the less sick one, two, more than ten tablets, up to three or forty. Seriously affect rice production.