山区稻瘟病,由间歇发生,变成常发病害。由晚稻发病,变成早晚稻常发病害。由山区发病,转变成丘陵平原也发病。近年来铜鼓县水稻稻瘟病发生使部分田块严重造成减产。根据县病虫测报站观察调查,水稻不同生育期受害,有苗稻瘟、叶稻瘟、节稻瘟、穗颈稻瘟、谷粒稻瘟、枝梗稻瘟。经过调查整理,山区稻瘟病发生,有四个明显高峰期。 Mountain blast, from intermittent occurrence, become a common disease. The late rice disease, become a common disease of morning and evening rice. Disease by the mountains, transformed into hilly plain disease. In recent years, the occurrence of rice blast in Tonggu County caused some plots to seriously reduce production. According to the county pest monitoring station observation and investigation, the different growth stages of rice victims, seedling blast, leaf blast, festival blast, neck blast, grain blast, branch blast. After investigation and sorting, mountain blast occurred, there are four obvious peak.