中国迈向 2 1世纪的农作物种子生产程序和种子类别的确立 ,应遵循以育种者种子为种源基础 ,运用重复繁殖技术路线 ,对种子进行限代繁殖等原则 ,以适合中国种子现代化特点 ,并与国际先进技术接轨。建议采用育种者种子→原原种→原种→良种四级程序。并逐步建立以“株系循环法”技术为基础的保种圃和“低温低湿库”双重保种制度 The process of China’s crop seed production and seed classification in the 21st century should be based on the principle of breeder’s seed as the provenance basis, the principle of repeated propagation techniques and the limited seed multiplication of seeds to suit the characteristics of China’s seed modernization, And with the international advanced technology. Proposed breeder seed → original species → original species → seed four procedures. And gradually establish a “seedling cycle” technology-based seed breeder and “low-temperature low-humidity warehouse” double seed system