Agricultural water use in accordance with the quota management system, farmers in the upper limit of water consumption should be controlled "cap" of the line.

根据农用水资源利用限额管理制度，农户的用水量应控制在上限“封顶”线之内。

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From the viewpoint of mathematical and economic theories, the economic water use quota was studied based on the minimum resource input and maximum output.

从数理经济学观点出发，研究了以资源边际产量为条件的经济用水定额，提出了华北地区不同水文年的各种作物经济用水定额。

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The total quota of water use in different level of water saving was put forward based on regression analysis, probability estimation analysis, advanced quadratic mean method and geometric mean method.

通过逐步回归法、概率测算法、二次平均先进法和简单几何平均法得到北京市宾馆不同节水水平下综合用水定额值；

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