种子是农业科技的载体,实践证明,农业生产的发展史,实质上就是种子的更新换代史。近几年,每年在全国20多个省、市、区组织开展的跨省、区农作物新品种展示、示范活动,使区试中表现突出的品种或刚审定的新品种能及时安排在适宜地区进行展示、示范,为加速农作物品种更新换代,推动优质专用品种发展,进一步优化种植业结构,促进农民增产增收发挥了重要作用。 Seeds are the carriers of agricultural science and technology. Practice has proved that the history of the development of agricultural production is essentially the history of the replacement and replacement of seeds. In recent years, demonstrations and demonstrations of new varieties of crops across the provinces and autonomous regions carried out in more than 20 provinces, cities and districts across the country each year have made it possible for newly-emerged varieties or newly approved varieties to be arranged in suitable areas in a timely manner Demonstrating and playing an important role in accelerating the upgrading and variety of crop varieties, promoting the development of high quality and special varieties, further optimizing the planting structure and promoting farmers’ increase in output and income.