推广抗病良种是防治稻瘟病的一项经济有效措施。但近十余年来不少品种都先后丧失了抗性而成为感病品种。如何尽快筛选出新的有效抗源以育成抗性相对稳定而持久的新良种,对今后水稻生产有着十分重要的现实意义。 Popularizing disease-resistant varieties is a cost-effective measure to prevent and control rice blast. However, over the past ten years, many varieties have successively lost their resistance and become susceptible varieties. How to screen out new and effective anti-source as soon as possible so as to cultivate a relatively stable and long-lasting newbreed is of great practical significance to rice production in the future.