(1) corn supply and demand. Generally speaking, if corn is produced more, the price will fall, and vice versa. The most important factors affecting maize production include climate, technology and production input. The production and supply of corn in the United States, China and South America have great influence on the international market, and the development of corn deep processing industry also affects the price of corn.
(2) Price changes of related commodities. Feed wheat, feed rice, soybean meal and corn have strong substitution relationship, and their prices are interrelated. Generally speaking, the price changes of these products will lead to the price changes of corn in the same direction.
(3) Other factors, including the price of means of production, industrial policy, import and export policy, reserve policy, monetary policy and other macro policies, macroeconomic cycle, political situation and some unexpected events, all have an impact on the corn price trend.