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我国从1964年开始水稻杂种优势利用研究。1972年被列为国家重点科研项目,由中国农业科学院和湖南省农业科学院组织全国有关科研、教学和生产单位,开展协作攻关。1973年实现“三系”配套的重大突破,并选配出一批强优组合,经繁殖制种和试验示范,很快用于生产。1976～1988年,全国累计种植杂交水稻12亿多亩,增产稻谷600
Study on Utilization of Heterosis in Rice in China since 1964. In 1972, it was listed as a national key scientific research project, and the Chinese Academy of Agricultural Sciences and Hunan Academy of Agricultural Sciences organized relevant national scientific research, teaching and production units to carry out collaborative research. In 1973, we achieved a major breakthrough in supporting the “three lines” and allocated a number of strengths and excellent combinations. Through breeding, seed production and experimental demonstration, our products are quickly used in production. From 1976 to 1988, a total of more than 1.2 billion mu of hybrid rice was planted throughout the country, yielding 600 rice