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本文报导我国主要三系及其组合的抗瘟性和抗瘟性遗传的表达特征，讨论了提高杂交水稻抗瘟性的有关问题。
This paper reports the genetic characterization of blast resistance and blast resistance of three major lines and their combinations in China, and discusses the related issues to improve the resistance of the hybrid rice to blast disease.