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文中确定了吉林省稻穗瘟病的经济损失允许水平:水稻黄熟期穗瘟发病率8～10％或穗瘟病情指数3～4。又根据吉林省有代表性的八个试验点五年的稻叶、穗瘟系统调查资料分析认为，决定吉林省生产中稻穗瘟最终病情的因素有三个:一是田间叶瘟基数;二是抽穗扬花期的气象条件;三是由当地生态栽培条件、水稻品种及稻瘟病菌生理小种群体共同决定的稻株抗病力。在此基础上提出吉林省稻穗瘟药剂防治指标。
In this paper, the economic loss allowable level of rice blast in Jilin Province was determined: the incidence of panicle blast was 8-10% or the panicle blast index was 3-4 in the paddy stage. According to the survey data of five years of rice leaf and panicle blast system in eight representative pilot sites in Jilin Province, there are three factors that determine the final condition of panicle blast in Jilin Province: one is the leaf blast base number; the other is heading Flowering period meteorological conditions; third is from the local ecological cultivation conditions, rice varieties and rice blast germplasm race population determined resistance to disease. On this basis, Jilin Province, the prevention and treatment of rice blast agent indicators.