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在大田条件下，以中秆大穗型品种鲁谷１０号和矮秆紧凑型品种矮８８为材料，研究了两种不同类型品种的群体结构特点，结果表明，不同品种的叶面积变化动态相似，叶面积系数随密度的加大而提高，且增加趋势逐渐减弱；密度加大削弱单株发育，产量构成因素有不同程度的降低；不同品种干物质积累特点不同，矮８８前期积累快，产量形成主要在灌浆期前；鲁谷１０号后期积累强度高，灌浆期是产量形成的主要时期，且随密度加大，生育后期对产量的形成贡献加大。
Under field conditions, the population structure characteristics of two different types of cultivars, Lugu 10 with medium stalk and spike compact, were studied. The results showed that the dynamic changes of leaf area of different varieties were similar , The leaf area coefficient increased with the increase of density, and the trend of increase gradually weakened; With the increase of density weakened the development of individual plants, the yield components reduced to some extent; The accumulation characteristics of different varieties of dry matter were different, The formation of the main period before filling; Lugu10 late accumulation of high intensity, grain filling stage is the main period of yield formation, and with increasing density, the latter part of the contribution to the formation of increased production.