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本文以1993～1994年全国东北片马铃薯区域试验数据为基础，采用显著性测定法测定各品种间的差异，然后用回归系数法估测其丰产性和稳产性，并用决定系数检验其回归系数的可靠性。结果表明春薯4号属于丰产类型。
Based on the data of the northeast potato region from 1993 to 1994, the differences among varieties were determined by the significance test. Then the regression coefficient was used to evaluate the high yield and stability of potato. The coefficient of regression reliability. The results showed that spring potato 4 belongs to high yield type.