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以密度设置为基础，对晋南冬小麦主要性状进行了动态分析。结果表明，穗数、穗粒数、株高等性状在高、低密度下的差异较大，这些性状在杂种后代选择中宜在高密度下进行，选择单株的基本苗以１５０万苗／ｈｍ２为宜，选择单穗的基本苗以２２５万～３００万苗／ｈｍ２为宜。叶面积系数在基本苗２００万苗／ｈｍ２密度下相对较小，此叶面积系数条件下库、源、流较协调，同化物生产积累最经济。在当地水肥条件下，大田生产基本苗以３００万苗／ｈｍ２左右为宜。
Based on the density setting, the dynamic characters of winter wheat in Jinnan were analyzed. The results showed that panicle number, grain number per panicle and height of plant were significantly different under high and low density. These traits should be carried out at high density in selecting offspring of hybrids. The basic seedlings per plant were selected with 1.5 million seedlings / hm2 Appropriate, choose a single spike seedlings to 2.25 million to 3 million seedlings / hm2 is appropriate. The leaf area coefficient is relatively small under the basic seedling density of 2 million seedlings / hm2. Under the condition of leaf area coefficient, the pool, source and flow are more coordinated, and the accumulation of the assimilate is the most economical. In the local water and fertilizer conditions, the basic production of field seedlings to 3 million seedlings / hm2 is appropriate.