我国玉米制种已有30多年历史,杂交种子质量不断提高,制种产量也从过去的150公斤提高到250～300公斤,对玉米增产起越来越大的作用。80年代后期,我国玉米种子生产技术又有许多新的进步,可以预见,这些科学技术的综合运用,将促进我国玉米种子生产的发展,充分说明了科学技术是生产力,而且是第一生产力的论点。 China has more than 30 years of seed production of maize, seed quality continues to increase, seed production from the past 150 kilograms to 250 to 300 kilograms, an increase of corn production more and more. In the late 1980s, there were many new advances in corn seed production technology in China. It is foreseeable that the comprehensive application of these science and technology will promote the development of corn seed production in our country and fully demonstrate that science and technology are productive forces and are the primary productive forces .