玉米杂交种的不断更新换代,对提高玉米产量起到很大的推动作用,据统计,农作物中玉米品种的更新对粮食增产的贡献最大,但从全国来看,玉米杂交种纯度的合格率仍然很低,而作为杂交种,玉米制种质量的好坏直接关系到玉米生产的发展。因此,如何在提高玉米制种产量的同时,提高制种质量,是每个制种单位和生产者关心的问题。 The continuous upgrading of maize hybrids has greatly promoted the improvement of corn yield. According to statistics, the update of maize varieties in crops has made the most contribution to the increase of grain output. However, the pass rate of maize hybrid purity remains Low, and as a hybrid, the quality of seed production of corn is directly related to the development of corn production. Therefore, how to improve the quality of seed production while raising the yield of maize seed is a concern for each seed production unit and producer.