我国常规水稻原种繁殖,过去一直采用以改良混合选择法为基础,以提纯复壮、优中选优为核心的“三圃制”来完成的。此法是一定历史条件下的产物,它为常规水稻原种繁殖起到了良好的作用。但它的程序过多工量过大,时间长成本高,因而造成了国有原良种场品种更新慢,适应市场差,繁殖的种子不是过时就是亏本。原种无市场,市场无原种,种子部门需原种,良原种生产部门却不愿繁殖生产。种子的多、乱、杂、劣现象无法从根本上解 Conventional rice breeding in China in the past has been to improve the hybrid selection method based on the purification and rejuvenation, optimization of the core of the “three-pu system” to complete. This law is the product of a certain historical condition, it played a good role for conventional rice breeding. However, its excessive work load and long time and high cost have resulted in the slow updating of the species of the original state-owned breeding farms and the poor adaptability to the market. The breeding seeds are not obsolete at a loss. No species of the original market, the market without the original species, the seed sector to be original species, good seed production sector is unwilling to breeding production. More seeds, chaos, miscellaneous, inferior phenomenon can not be fundamentally resolved