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对早籼／早粳、早籼／中粳、早籼／晚粳、中籼／中粳和中籼／晚粳五类配组不完全双列杂交Ｆ１及其亲体进行６个主要农艺性状的考察，结果表明，作单季稻种植时，早籼／早粳杂种Ｆ１表现为抽穗过早，营养生长和生殖生长优势不强；早籼／晚粳和中籼／晚粳杂种Ｆ１，抽穗过迟；营养生长过旺，部分组合难于安全齐穗；而中籼／中粳和早籼／中粳的杂种Ｆ１，抽穗期较为适宜，营养生长较好，且主穗总粒数的正向优势明显较高，中籼／中粳配组还表现较多的单株穗数，因而它们是较为理想的籼粳配组类型。
Six main agronomic traits of F1 and their parental lines were obtained from incomplete diallel cross combinations of early indica / early japonica, early indica / middle japonica, early indica / late japonica, middle and late indica / indica / japonica and medium indica / late japonica The results showed that hybrid rice F1 of early indica / early japonica hybrid rice exhibited too early heading with less advantage of vegetative growth and reproductive growth when used as single cropping rice. Hybrid F1 of early indica / late japonica and medium indica / late japonica hybridization was too late; While the hybrid combination of middle-late indica / medium japonica and early indica / mid-japonica hybrid F1 was more suitable for heading stage and better vegetative growth, and the positive predominance of main grains was more obvious High, medium and medium japonica rice group also showed more panicle per plant, so they are more ideal types of indica and japonica.