用耗水系数作为旱区农业生产力水平区划指标的探讨

Using Water Consumption Coefficients As Reginona1ization Indexes for Agricultural Productivity in the Arid Areas

探讨以耗水系数作为旱区农业生产力水平区划的重要指标。经分析表明，耗水系数与产量、地力和农业技术水平关系密切，趋势一致，用于旱区农业生产力水平区划方法简便，有助于地区间旱作技术的相互借鉴，开发旱区降水资源，提高旱区农业生产整体水平。针对耗水系数的特点，建议在应用时须考虑其它非水资源的生产及经济效益。

This paper discusses the rationalization of regionalization indexes of agri-cultural production in the arid areas with water consumption coefficients. the analysisshows that water consumption is closely related to yields,land fertility and agriculturaltechnologies。and the tendency is identical. The methodology used in agricultural pro-ductivity regionalization is simple and helpful to being used as the inter referenceamong rainfed agricultural technologies in the arid areas so as to make full use of rainfallwater resources to improve the whole level of agricultural production in the arid areas·Based on the characteristics of water consumption coefficients,it is suggested that in us-ing them other non water resources production efficiency and economic benefits shouldbe taken into account.