小麦开花后的源库关系分析结果表明,库容量的大小影响开花后光合产物的生产和分配,较大的库容可以促进叶片光合潜力的发挥和光合产物向穗部的运转。开花后绿叶面积的大小和光合强度的高低影响籽粒的灌浆速率,粒重受花后干物质积累量的制约。说明小麦开花后库对源有反馈调节作用、而源又影响库的充实,源库关系在动态变化中相互协调取得平衡。栽培措施应使源库关系在高水平上取得动态平衡,才能获得高产。粒叶比既反映了库容的相对大小,又代表源的质量水平和库对源的调运能力,可作为群体条件下源库关系是否协调的综合指标。 The analysis of source and sink relations after flowering showed that the size of the storage capacity affected the production and distribution of photosynthate after flowering. The larger storage capacity could promote the photosynthetic potential of photosynthesis and the photosynthate to spike. After flowering, the size of green leaf area and photosynthetic intensity affect grain filling rate and grain weight is restricted by the post-anthesis dry matter accumulation. It shows that the flowering of wheat possesses feedback regulation to the source, and the source also affects the enrichment of the reservoir. The relation between source and sink is balanced in the dynamic change. Cultivation measures should make the relationship between source and sink to achieve a high level of dynamic balance, in order to obtain high yield. Grain-leaf ratio not only reflect the relative size of the storage capacity, but also on behalf of the source of the quality level and the source of the transport capacity of the source, as a group of sources under the conditions of the library is coordinated or not.