1. Substitution effect: The price of corn has risen, and compared with wheat, corn has become more expensive, which has led some consumers and producers to choose wheat as a substitute, thus increasing the demand and price of wheat.

2. Competitive effect: Wheat and corn are the main food crops, and they compete with each other to some extent. With the increase of corn price, some consumers and producers turn to buy or grow other food crops, such as wheat, which increases the supply and demand of wheat market and has an impact on wheat price.

3. Supply and demand: The supply of wheat is relatively sufficient, and the competition in the wheat market is fierce, so even if the price of corn rises, the price of wheat will be less affected. The relationship between supply and demand and market competitiveness will have an impact on the degree of price change.