三十多年来,我国南方稻区水稻育种经历了三次品种更新:即五十年代以改良品种更换地方品种;六十年代至七十年代初、中期以矮秆品种更换高秆品种;七十年代后期至八十年代初期推广了杂交水稻;近年来开展了优质米研究,并取得了可喜的进展。实践证明,每一次品种的更换,都获得了突破性的效果,并带动了其他措施的改革,有力地促进了农业生产的发展。 For more than thirty years, rice breeding in the southern rice area of ​​China has undergone three breed updates: the replacement of local breeds with improved breeds in the 1950s; the replacement of tall culm varieties with dwarf breeds in the mid-1960s to the early 1970s; Hybrid rice has been popularized in the late 1980s and early 1980s; high-quality rice research has been carried out in recent years and remarkable progress has been made. Practice has proved that every change of variety has achieved a breakthrough effect, and led to the reform of other measures, which effectively promoted the development of agricultural production.