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对吉林省近年生产上主要推广应用的若干不同熟期水稻品种群体整齐度的研究结果表明：出穗日数和茎高等主要形态性状的群体整齐度品种间有明显差异，但各品种在各性状整齐度的表现上，差异并不完全一致，整齐度好的性状相对较多的品种有通３５、吉粳６３号和秋光。各性状整齐度与品种的熟期和类型无关。各性状整齐度之间亦存在明显差异，最整齐的性状是出穗日数（ｃｖ＝１．８２），然后依次为茎高（ｃｖ＝８．３２）、穗长（ｃｖ＝１１．１）、穗数（ｃｖ＝１４．０）、每穗一次枝梗数（ｃｖ＝１６．５）、每穗粒数（ｃｖ＝２９．０）和每穗空秕粒数（ｃｖ＝４５．９）。各性状的群体整齐度与产量的相关均不显著，但出租整齐度与空秕率的相关达到了显著水平，表现为出穗越不整齐，空秕率越高。因此，在新品种选育过程中，对出穗的要求还应“一刀齐”。
The results of the research on the regularity of population of several mature rice cultivars in Jilin Province in recent years showed that there are obvious differences among the groups with the main morphological traits such as heading days and stem height. However, The performance of the degree, the difference is not exactly the same, good regularity varieties relatively more varieties of Tong 35, Jijing 63 and autumn light. The uniformity of the traits has nothing to do with the maturity and type of the cultivars. There was also a significant difference between the regularity of all traits. The neat trait was the number of ears per day (cv = 1.82), followed by stem height (cv = 8.32), spike length (cv = 11.1) Spike number (cv = 14.0), number of branches per panicle (cv = 16.5), number of grains per panicle (cv = 29.0) and number of panicles per panicle (cv = 45.9). No significant correlation was found between group uniformity and yield of all traits. However, the correlation between rent uniformity and empty rate reached a significant level, showing the more irregular earrings and the higher empty rate. Therefore, in the breeding process of new varieties, the requirements of the ear should also be “one size fits all.”