选育和推广良种是一项重要增产措施,而在今后的增产措施中与化肥、农药等相比,种子潜力最大.在国外普遍重视良种的繁育、加工和推广,并且在生产实践中已收到显著增产效果.目前,种子象化肥和农药一样,已成为重要的生产资料,作为商品销售,并广泛采用专业化的繁育和工厂化的加工,种子加工基本上实现了机械化流水作业和自动化. Breeding and popularizing of improved varieties is an important stimulation, while in the future stimulation measures, seeds have the highest potential compared with chemical fertilizers, pesticides, etc. Breeding, processing and popularizing of improved varieties are generally valued abroad, and have been received in production practice At present, seeds, like chemical fertilizers and pesticides, have become an important means of production. Selling of commodities, as well as the extensive use of specialized breeding and factory-oriented processing, have basically resulted in the mechanization and automation of seed processing.