近年来,我国水稻病虫害的发生危害呈加重趋势,尤其是水稻“两迁害虫”、稻瘟病、纹枯病在水稻主产区连年大面积暴发成灾,条纹叶枯病在长江下游地区发生,南方黑条矮缩病在长江以南稻区迅速扩大,发生为害严重,稻曲病、穗腐病等在全国尤其是粳稻区蔓延,严重威胁我国水稻生产。连作晚稻主要病虫害防治主要采取以下措施。 In recent years, the occurrence and damage of rice pests and diseases in our country have tended to increase, especially in rice and “two migration pests”. The rice blast and sheath blight have been seriously affected by large-scale outbreaks in the main rice producing areas in recent years. The stripe blight is found in the lower reaches of the Yangtze River Occurred in the southern black streak disease in the Yangtze River south of the rice area rapidly expanding, serious damage, false smut, ear rot and the spread in the country especially japonica rice area, a serious threat to China’s rice production. For the main pests and diseases in late rice control mainly take the following measures.