稻瘟病是我省水稻上首要病害。七十年代以来每隔3～4年就大流行一次,其间1985年发病面积达750万亩,损失稻谷超过22万吨,究其原因,除有利的发病气候条件外,主要是大面积种植了感病品种。尽管人们认识到了品种抗性的重要性。但如何选育和合理地利用抗病品种,迄今为止在认识上是不一致的。本文拟就这方面提些参考意见,供同行商榷。 Rice blast is the most important disease on rice in our province. The pandemic has taken place every three to four years since the 1970s. During that period, the disease hit an area of ​​750 million mu in 1985 and the loss of more than 220,000 tons of rice. The reason for this is that, in addition to favorable climatic conditions, large-scale planting Sick variety. Despite the recognition of the importance of variety resistance. However, how to breed and rationally use disease-resistant varieties has so far been inconsistent in cognition. This article intends to put some reference in this regard for discussion.