种植密度对冬小麦产量及其构成因素的影响

Effects of Planting Density on Yield and Its Components of Winter Wheat

以泰山28、中育9398和新麦26为材料,采用3个不同密度处理研究其对冬小麦产量及其构成因素的影响。结果表明:品种、种植密度及其互作对冬小麦产量的影响均达到显著水平;品种、种植密度对公顷穗数、穗粒数有显著影响;品种对千粒重的影响显著,种植密度对千粒重的影响不显著。泰山28、中育9398和新麦26的最佳种植密度分别为300万、300万、225万苗/hm2,因品种特性的差异,3个小麦品种的主攻方向也不相同,泰山28和新麦26应侧重提高穗粒数,中育9398应侧重提高公顷穗数。

Taishan 28 , Zhongyu 9398 and Xinmai 26 were used as materials and three density treatments were set to study the effects of planting density on yield and its components of winter wheat .The results showed that different varieties , planting densities and their interaction had significant influences on yield of winter wheat .Variety and planting density had significant effects on spike number and grain number per spike .The effect of variety on 1 000-grain weight reached to significant level , while that of planting density on 1 000-grain weight was not significant .The optimal planting density for Taishan 28 , Zhongyu 9398 and Xinmai 26 was 3.00, 3.00 and 2.25 million seedlings per hectare respectively .Because of different variety traits, the improving of Taishan 28 and Xinmai 26 should emphasize on grain number , and Zhongyu 9398 should emphasize on spike number .