Evaluating the Effects of P.L. 480 Wheat Imports on Brazil's Grain Sector
通过计量分析发现，美国P.L. 480小麦进口计划对巴西谷物生产有正面影响，但需权衡其对商业进口和世界小麦市场的负面作用。
Abstract Econometric analysis of the grain sector of Brazil shows that P.L. 480 wheat imports have had a positive impact on grain production. This was due primarily to government wheat import and domestic price support programs whereby revenues gained from wheat imports may be used to support domestic grain producers. The positive production impact must, however, be balanced against the negative effects of P.L. 480 on commercial wheat imports and the potential disruptions of world wheat markets.