对小麦植株地上部器官形成过程进行了较为系统、全面的模拟研究 ,建立了包括叶片、节间和分蘖的解释性动态模型。模型引入 3个品种参数 ,即最大叶热间距、伸长节间数和株高 ,分别反映了不同小麦品种在叶片和节间等方面的遗传差异性。利用国内、外三组田间试验资料对所建模型进行了检验 ,表明模型对主茎叶龄、单株叶面积、单株分蘖数以及不同发育时期的叶热间距等均有较好的预测性和解释性。模型尤其对主茎叶龄、单株分蘖数和不同发育时期的叶热间距具有较好的预测性和适用性。 A systematic and comprehensive simulation study was conducted on the formation of shoot organs in wheat plants. An explanatory dynamic model including leaf, internode and tiller was established. Three varieties parameters were introduced into the model, that is, the maximum leaf thermal distance, the number of internodes and the plant height, respectively, which reflected the genetic differences of different wheat varieties in leaves and internodes. The model was tested by field and field experiments at home and abroad. The results showed that the model had good predictive value for leaf age of main stem, leaf area per plant, tiller number per plant and leaf thermal distance at different developmental stages Explanatory. In particular, the model has good predictability and applicability for leaf age, tiller number per plant and leaf thermal distance at different developmental stages.