Study on Game Model of Soybean Price: A Case Study of China-US Trade War

Abstract

In China's soybean import market, according to the market share of all countries in China's soybean import market over the years, it is judged that China's soybean import market is a typical duopoly market. In this paper, Brazil and the United States are regarded as two monopoly manufacturers in China's soybean imports, and a dynamic decision-making model composed of these two monopoly manufacturers is established. The chaotic characteristics of the system are analyzed by numerical simulation, bifurcation diagram and maximum Lyapunov exponent. The stability of Nash equilibrium point of the system is observed. It provides a theoretical reference for price maintenance of domestic soybean prices which are fluctuated by the China-US trade.

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