建国至今，渝东北地区水稻品种经历了高秆良种、矮秆良种、杂交稻品种三个重要的推广时期。历时最长、作用最大的杂交水稻推广期，又经历了推广初期的摸索，到汕优2号、汕优63、D优63主推组合的确立，再到杂交稻多组合区域“集团当家，轮换种植”推广模式的确立等发展阶段，有效推动了渝东北地区水稻生产的发展。目前该地区水稻生产呈现出品种数量明显增多、单个品种面积下降的趋势。今后水稻品种的选择推广应向抗病、高产、优质、综合性状优良的方向发展。

Rice varieties in Northeast of Chongqing experienced three important promotion period of high stalk varieties, dwarf varieties and hybrid rice combinations. The promotion period of hybrid rice had the longest period and the greatest effect in rice production in this region, it experienced four important development stages, too. Now, the region showed a significant increase of the number of rice varieties and the decline of the area of single varieties. We should breed and promote the rice varieties with excellent comprehensive traits in disease resistance, high yield, fine quality.