The introduction of the double mark figure and the special interacting value (Dge) of AMMI model was useful to identify the discriminability of locations to varieties and the special adaptability of cultivars.

• AMMI模型中双标图和特殊互作效应值Dge的引人,为直观地、定量地估计试点对品种的分辨力及品种对试点的特殊适应性提供了一种非常有效的手段。