一、背景分析1．优质稻米研究生产简要回顾我国人多地少，为解决温饱问题，建国以来党和政府一直把农业特别是粮食生产放在十分重要的地位。我国水稻育种史的两个里程碑矮秆育种与杂种优势利用为水稻单产的跳跃式提高奠定了基础。进入80年代中期，温饱问题基本解决。1985年1月 First, the background analysis 1. A Brief Review of High-Quality Rice Research and Production In our country, there are many people and fewer places. Since the founding of the People’s Republic, the party and government have always placed agriculture, especially food production, in a very important position. Two milestones in rice breeding history of China dwarf breeding and utilization of heterosis laid the foundation for the leap-forward improvement of rice yield. In the mid-1980s, the basic problem of food and clothing was solved. January 1985