选用3个不育系和6个恢复系，采用3×6不完全双列杂交设计配制18个组合，对新育成三系杂交稻不育系德66A主要经济性状的配合力进行分析。结果表明，德66A在有效穗数、千粒重、结实率和单株产量性状上一般配合力（GCA）效应值明显好于赣香1A和泸香618A；所测组合中，杂交组合德66A/成恢727在有效穗数、千粒重和单株产量性状上特殊配合力（SCA）效应值均最大。18个杂交组合F1主要经济性状竞争优势大小受不育系的影响要大于恢复系。各性状狭义遗传力表现为单株产量>有效穗数>结实率>千粒重>穗长>每穗实粒数。

In order to analyze the combining ability of major economic characters of three-line sterile line De 66A, 18 cross combinations from 3 sterile lines and 6 restorer lines were used by the 3×6 NCII genetic mating design. The results showed that the general combing ability value （GCA） of effective panicles, 1 000-grain weight, seed setting rate and grain weight per plant of De 66A were significantly higher than Ganxiang 1A and Luxiang 618A. The special combining ability value of effective panicles, 1 000-grain weight and grain weight per plant of De 66A/ Chenghui 727 were the highest in all of 18 hybrid combinations. 18 hybrid combinations heterosis of main economic traits were greatly influenced by the sterile lines than the restorer lines. The narrow sense heritability ranged from great to small as follows: grain weight per plant, effective panicles, seed setting rate, 1000-grain weight, panicle length and full grain per panicle.