【摘要】 提出了一个数学模型,对南京地区(32.04°N,118.5°E)小麦籽粒灌浆期中光能供求关系作模拟,以消光系数的日变化为反映株型的指标,从叶水平角随灌浆日进程所应具有的动态表现探讨本地区辐射条件下的合理株型。利用模型对不同基因型的光能利用率作了具体分析。分析表明,在辐射资源不足的南京地区,小麦叶片的水平角随灌浆进程以有一个由直立而水平再至倒垂的动态过程为宜。更多还原

【Abstract】 A mathematical model is proposed for simulating the process of energy accumulation in wheat crop stand during grain filling period. This model infers the optimum plant type in given ecological region. For example, the rationality of plant types of 3 genotypes was estimated by this model.The result of study indicated that because the energy of solar radiation does not satisfy grain filling requirement in Nanking region (32,04°N, 118.5°E), a optimum dynamic process of leaf horizontal angles of wheat which proceed from the erect-type to horizontal type then to declining-type is adapted to this region.更多还原