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“主要农作物新品种选育技术研究”是国家“七五”攻关研究项目。据不完全统计,通过区域试验或审定的新品种270多个,累计推广10亿多亩,获得极为显著的经济效益,为科技兴农做出了贡献。水稻育种方面,通过“三系”杂交法又培育出一批新的籼型和粳型杂交组合。与此同时,二系法杂交稻研究获得重大进展。小麦育种方面,通过区域试验的新品种90多个,其中通过省、市级审定的50多个,覆盖面积达8900多万亩。在玉米育种方面,共培育出50余个玉米新品种,累计推广4亿多亩,增产玉米130多亿公斤。在棉花育种方面,已跻
“Research on Breeding Techniques of New Crops of Major Crops ” is a national “75 ” research project. According to incomplete statistics, over 270 new varieties of products have been approved or approved by the region and a total of 1 billion mu have been rolled out to obtain extremely significant economic benefits and contribute to the prosperity of agriculture through science and technology. In rice breeding, a new batch of indica and japonica crosses were also cultivated by “three lines” hybridization. At the same time, significant progress has been made in the study of two-line hybrid rice. In wheat breeding, more than 90 new varieties have passed the regional test, among which over 50 have been examined and approved by the provincial and municipal governments, covering an area of more than 8900 mu. In maize breeding, a total of more than 50 new varieties of maize were cultivated, with a total promotion of more than 400 million mu and more than 13 billion kilograms of maize. In cotton breeding, has been listed