基于39个主要国家的截面数据,选取反映资源、经济、制度、人口四个因素的11个变量,采用逐步回归分析方法对影响虚拟水出口的因素进行实证分析。回归结果表明,耕地面积、人均GDP、水自给率、粮食单产4个变量对虚拟水出口量具有显著影响且均具有正向效应。 Based on the cross-sectional data of 39 major countries, eleven variables reflecting the four factors of resources, economy, system and population were selected and the factors that affected the export of virtual water were empirically analyzed by stepwise regression analysis. The regression results showed that the four variables of cultivated land area, per capita GDP, water self-sufficiency rate and grain yield per unit area had significant effects on the export volume of virtual water and all had positive effects.