水稻立枯病是水稻苗期主要病害之一。由于丹东稻区地处沿海,早春气温回升较慢,波动较大,出现倒春寒的天气频率较高,水稻立枯病每年都有程度不同的发生,给水稻生产造成很大的威胁和损失。如1977年仅东沟县西部四个公社统计,因水稻立枯病的大发生,不仅 Rice blight is one of the main diseases in rice seedling stage. As the Dandong rice area is located on the coast, the early spring temperatures picked up slowly and fluctuated greatly, and there was a relatively high frequency of weather in late spring. The annual occurrence of rice blight occurred to different extents, posing a great threat and loss to rice production. As in 1977, only the statistics of the four communes in the western part of Donggou County were not only because of the outbreak of rice blight