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本文充分利用马氏平方距离的广义性，使之成为冬麦试验年与历史年代温度条件的气候差异的综合要素指标，并运用马氏距离的可检验性，通过辗转运算方式筛选相似年，对试验阶段的气候代表性进行鉴定。最终确定沈阳１９９１～１９９７年冬麦试验的气候代表性为８８％，为冬麦北移提供了气候依据。
This paper makes full use of the generality of the square distance of Markovs, making it a comprehensive index of climatic differences of temperature conditions during winter wheat trial and historical years. Using the testability of Mahalanobis distance, The climate of the pilot phase was identified. Finally, the climate representative of winter wheat from 1991 to 1997 was determined as 88%, which provided the climate basis for the northward migration of winter wheat.