国际市场对我国大豆进口的垄断力研究

Research on the Monopoly of International Market on China's Soybean Import

美国、巴西和阿根廷是我国三大大豆主要进口来源国,文章运用勒纳指数和GK模型测定我国大豆进口的需求弹性并分时期检验这三国对我国大豆进口的垄断程度。研究结果表明:三国基本掌握了我国大豆供给市场,美国始终对我国大豆进口存在显著的市场垄断力,巴西和阿根廷对我国大豆进口的市场垄断力在逐渐增强。因此,在面对强势的国际垄断情形下,有必要对我国国内大豆供给市场进行整合,形成强有力的国内寡头供应市场以降低国际市场垄断力,为我国大豆产业提供广阔的发展空间。

The United States,Brazil and Argentina are China＇s main source countries of soybean imports.This paper studies the elasticity of demand of China＇s soybean imports,and tests the monopoly on China＇s soybean imports of these three countries in periods in the use of Lerner index and the GK model.The results show that： the United States dominated in China＇s soybean imports all the time;the monopoly of Brazil and Argentina has been strengthened gradually.Therefore,it＇s necessary to integrate China＇s domestic supply market of soybean.