The result indicated that whether green-shell egg or white-shell egg, the linear correlativity was presented between duck egg shell thickness grade K and color message (H, S, I).

• 试验结果表明，无论是白壳蛋还是青壳蛋，其蛋壳厚度K与颜色参数H、S、I三个变量之间存在显著线性相关关系。