1. Corn has been cultivated in China since the Ming Dynasty. According to historical records, the history of corn cultivation in my country is about 470 years, that is, since the 28th year of Jiajing reign of Emperor Shizong of the Ming Dynasty (1549).

2. Corn is native to Latin America, along the foothills of the Andes in Mexico and Peru. After Columbus discovered the American continent, he brought corn to Spain on his second return trip (1499).

3. According to archaeological discoveries, wild corn existed in Mexico more than 10,000 years ago, and Indians have been cultivating corn for 3,500 years. Archaeologists have discovered relics of the corn culture between 7000 BC and 1540 AD in the Tehuacán Valley of Puebla, showing how the ancient Indians gradually began to pick wild fruits and harvest wild fruits as hunting activities became increasingly rare. The transition to artificial cultivation of corn.