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本研究在长春选用耐寒性较强的 Ｍｉｒｏｎｏｖｓｋａｊａ ８０８和加 ６９０两个品种，探讨播期和密度对冬小麦生育期和产量的效应。结果表明：加 ６９０生育期早于 Ｍｉｒｏｎｏｖｓｋａｊａ ８０８，两者小区产量相似。推迟播期时，各生育时期延迟，而生育天数缩短。由于晚播冬小麦使千粒重显著下降，导致冬小麦小区产量降低。当以不同的密度种植时，对冬小麦生育期的影响在两个品种上反应不同；对小区产量无显著影响。
In this study, two varieties of Mironovskaja 808 and Canadian 690 with strong cold tolerance were selected to study the effects of sowing date and planting density on the growth and yield of winter wheat. The results showed that the growth period of Canadian 690 was earlier than that of Mironovskaja 808, and the yields of the two plots were similar. Delayed sowing date, the delay in the period of childbearing, fertility days shortened. As a result of late sowing winter wheat grain weight significantly decreased, resulting in reduced winter wheat yield. When planted at different densities, the effects on the growth of winter wheat differed between the two cultivars; there was no significant effect on plot yield.