玉米大面积制种的关键是母本去雄。经常由于主客观原因,造成去雄不及时、不彻底。若能利用不育化制种,不仅可以节省去雄用的劳力,降低生产成本,而且能保证杂交种的质量。从1984年开始,我们在大田及温室连续6代进行了三系配套、株间遗传型差异、最佳恢复系的选育、异名保持系的应用等方面的探索。一、不育化制种是方向从制种点上抽雄期的田间检查看到:一是当时正值农忙季节,劳动力十分紧张;二是此季节经常发生大雨洪水,人们无法进地,以致去雄不及时,特 The key to large-scale corn seed production is the male parent. Often due to the subjective and objective reasons, resulting in not male, not thorough. If the use of sterile seed production, not only can save labor to remove male, reduce production costs, but also to ensure the quality of hybrids. Since 1984, we have explored the three-line matching, the genetic differentiation among strains, the breeding of the best restorer lines, and the application of the synonymous maintainers in the fields and greenhouses for six consecutive generations. First, the sterile seed production is the direction from the seed production stage tasseling field inspection to see: First, at a time when the busy season, the workforce is very tense; Second, frequent heavy rains and floods this season, people can not go in, so go Male is not timely, special