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１９９５年和１９９６年在长春种植８个冬小麦品种，对其农艺性状的相关分析结果表明，当穗数为６９～６７８万穗／ｈｍ２，株高为５６．９０～１１７．２０ｃｍ时，产量与穗数、越冬率、株高呈极显著正相关，与穗粒重、千粒重呈显著负相关。当越冬率一定时，产量与株高、穗数分别呈显著和极显著正相关；当株高、穗粒数、千粒重一定时，产量与越冬率呈显著或极显著正相关。通径分析表明，穗数、穗粒重对产量的直接影响较大，越冬率经穗数对产量的间接影响最大。因此，可以看出在长春种植冬小麦时穗数对产量形成的重要作用。
In 1995 and 1996, 8 winter wheat cultivars were planted in Changchun. The correlation analysis of their agronomic traits showed that when the number of spike was 69 ~ 6780 thousand spike / hm2 and the plant height was 56.90 ~ 117.20 cm, the yield and spike Number, overwintering rate, plant height were highly significant positive correlation, and grain weight, grain weight was significantly negatively correlated. When the rate of overwintering was constant, the yield was significantly and significantly positively correlated with the plant height and panicle number respectively. When the plant height, grain number per spike and 1000-grain weight were constant, the yield was significantly or very significantly positively correlated with the overwintering rate. Path analysis showed that the spike number and grain weight per spike had a direct impact on the yield, and the overwintering rate had the largest indirect effect on the yield through the spike number. Therefore, it can be seen in Changchun winter wheat cultivation on the important role of yield formation.