品种的产量表现是基因型与环境互作的结果,不同品种对不同环境有不同的表现型。相对来说,有的品种对环境适应性广,在各地均表现产量较高,而有的品种对环境适应性窄,只在某些特殊环境条件下表现高产。前者属于高产而稳定的品种,可普遍推广;后者则属于在特定环境下高产但不稳定的 Yield performance of varieties is the result of interaction between genotype and environment. Different varieties have different phenotypes to different environments. Relatively speaking, some varieties have wide adaptability to the environment and show higher yields everywhere, while others are less adaptable to the environment and only show high yields under certain special environmental conditions. The former belongs to high-yielding and stable varieties, which can be widely promoted; the latter belongs to high-yielding but unstable in specific environments