江西省宁都县是水稻种植大县，又是稻瘟病重发区，全县每年都有成百上千亩的稻田因遭受稻瘟病危害而导致严重减产或绝收。摸清和掌握稻瘟病发生和流行规律是有针对性防控该病害的关键。本文从品种抗性、气候条件、土壤类型、栽培措施等方面阐释稻瘟病易发、重发的原因，并针对发病原因提出防治对策和一些具体措施，以控制或减轻稻瘟病的发生与危害。

Ningdu is a large county of rice cultivation, with serious occurrence of rice blast. This paper explains the reason of serious occurrence of rice blast in the aspects of variety resistance, climatic condition, soil types and cultivation measures, and put forward some concrete countermeasures and methods to control or reduce the occurrence and harm of rice blast.