对影响扩张性财政政策可持续性的因素 ,人们通常从债务负担和挤出效应两个角度进行考察。在债务负担不那么严重的情况下 (如我国当前情况 ) ,人们尤其注意挤出效应。实际上 ,由于判定扩张性财政政策可持续与否的关键之一在于实际利率与经济增长率的关系 ,而经济增长率又在相当 For the factors that affect the sustainability of expansive fiscal policies, people usually study from two aspects: debt burden and crowding-out effect. In less debt-burdened situations (as in our current situation), people pay particular attention to the crowding-out effect. In fact, one of the keys to determining the sustainability of an expansionary fiscal policy lies in the relationship between real interest rates and economic growth rates, which in turn are comparable