常规稻麦是我国的主要粮食作物。建立健全常规稻麦良繁体系,建立科学而严整的良种繁育制度,生产纯度高、质量好的种子,定期进行品种更新更换,是发展粮食生产的前提。随着农村经济体制改革的深入和商品经济的发展,加上现代育种途径的增多, Conventional rice and wheat are China’s major food crops. It is a prerequisite for the development of grain production to establish and improve the conventional rice and wheat propagation system, establish a scientific and strict thoroughbred breeding system, and produce seeds of high purity and good quality with regular replacement and replacement of varieties. With the deepening of rural economic system reform and the development of commodity economy, coupled with the increase of modern breeding methods,