The main crops introduced from South America during the Ming Dynasty are as follows:
1. Maize: Maize is a native crop in South America. After hundreds of years of domestication and cultivation, it has gradually become the main local food crop. During the Ming Dynasty, maize was introduced into China and became an important crop in southern China.
2. Sweet potato: sweet potato is also a native crop in South America. After domestication and improvement, it has become one of the main local foods. During the Ming Dynasty, sweet potato was introduced into China and became a new crop in southern China.
3. Tropical fruits: South America is a tropical region, where there are many kinds of fruits, such as pineapple, mango, banana, etc. These fruits were introduced into China during the Ming Dynasty and became a kind of fresh fruit in southern China.
4. Cocoa beans: Cocoa beans are native crops in South America, and can be processed into chocolate and other delicacies. During the Ming Dynasty, cocoa beans were introduced into China and became a new food material.
In short, the crops introduced from South America during the Ming Dynasty were mainly corn, sweet potatoes, tropical fruits and cocoa beans, which were widely planted and applied in southern China.