大田稻瘟病的发生和流行,严重威胁着水稻生产。开展大田稻瘟病防治的策略和方法,必须根据稻瘟病的发生规律,抓住叶瘟和穗瘟盛发的水稻分蘖始期至盛期以及孕穗至抽穗期,及时喷药,这是防治稻瘟病的关键时期。此外还应结合影响稻瘟病发生轻重的因子——品种、气候、栽培技术等,开展大田防治。 The occurrence and prevalence of rice blast in Daejeon are serious threats to rice production. In order to carry out the strategy and method of preventing and controlling rice blast in Daejeon, it is imperative to grasp the rapid onset of tillering and peak tillering, and the booting to heading date of the rice blast blight and panicle blast according to the occurrence of rice blast, which is to control rice blast Critical period. In addition, the prevention and control of the field should be carried out in combination with the factors that affect the severity of rice blast - species, climate, cultivation techniques and so on.