通过田间试验比较了6个二倍体雄性不育杂优组合与 6个相应保持系单交组合在F1的块根产量、含糖率和产糖量.试验结果表明:①与生产上推广的多倍体杂交种和二倍体优良单交种相比,绝大多数组合F1具有一定的产质量优势,但组合间、性状间优势差异明显.②雄性不育系杂优组合比相应保持系单交组合在F1的块根产量和产糖量性状上优势显著,而在含糖率性状上优势稍弱.但是,个别保持系单交组合F1产质量优势极其显著,具有在生产中直接利用的前景. The field trials were conducted to compare the root yield, sugar content and sugar yield of 6 diploid male sterility combinations with 6 corresponding maintainer lines in F1. The results showed that: (1) Compared with the diploid hybrids, the majority of F1 hybrids had some advantages in yield and quality, but there were significant differences among the combinations and traits.②The heterosis combinations of male sterile lines were more stable than those of the corresponding maintainer lines The cross combination had significant advantages in root tuber yield and sugar yield traits in F1, but slightly weaker in sugar trait traits. However, individual maintainer lines had the most significant advantages in F1 yield quality and had the potential of direct utilization in production .