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本文运用灰色系统理论的关联度分析．提出关中地区节水吨粮田生产．玉米是关键产品。在稳定夏粮小麦的基础上．对玉米下功夫是正确的决策．根据试验资料．用灰色预测分析，建立了冬小麦耗水量自身与产量的Ｇ（１，２）模型，经验证与实测吻合很好．可在生产实践中应用。
In this paper, the gray system theory of relevance analysis. Put forward Guanzhong area water-saving tons of grain production. Corn is the key product. On the basis of stabilizing summer grain wheat. Work on corn is the right decision. According to the test data. By using gray prediction analysis, the G (1, 2) model of water use per unit area and yield of winter wheat was established, which is in good agreement with the measured data. Can be used in production practice.