Corn and potatoes are native to South America. Why do they appear in China?

It is difficult to determine when and where potatoes were introduced to China. According to the county records of Xingping County, Shaanxi Province, potatoes were introduced to China in16th century.

Potatoes are native to the Andes in South America, and the history of artificial cultivation can be traced back to 8000-5000 BC in southern Peru. Lake Titicaca in the Andes at an altitude of 3800 meters may be the earliest place to cultivate potatoes. About 7000 years ago, an Indian tribe migrated from the east to the Andes in the Alps, camped near Lake Titicaca and made a living by hunting and gathering. They were the first people to find and eat wild potatoes.

The most important potato variety is tetraploid. Tetraploid potatoes are found all over the world. At first, 1570 was introduced from Colombia in South America to Spain in Europe. After artificial selection, it became a long-term type.

/kloc-In the middle of the 6th century, a Spanish colonist brought potatoes from South America to Europe. At that time, people always appreciated the beauty of its flowers and used it as an ornament.

1586, the British defeated the Spanish in the Caribbean, collected tobacco and other plant seeds from South America, and brought potatoes to Britain. The climate in Britain is suitable for the growth of potatoes, which are taller and easier to manage than other grains.

Later, a French agronomist, Ann Obamanqi, discovered through long-term observation and personal practice that potatoes can not only be eaten, but also be made into bread. Since then, French farmers have begun to grow potatoes on a large scale.

1650, potato has become the main food crop in Ireland, and began to spread in Europe.

/kloc-In the 0/7th century, potato has become an important food crop in Europe and was introduced to China. Because potatoes are very suitable for growing in cold areas where the original grain yield is extremely low and only naked oats can be planted, they spread rapidly in Inner Mongolia, Hebei, Shanxi, northwestern Shaanxi and other places. High-yield crops such as potatoes, corn and sweet potatoes imported from the United States have become the main food for the poor and played an important role in maintaining the rapid population growth in China.

17 19 was brought back to the United States by Irish immigrants and began to grow in the United States.

/kloc-At the beginning of the 0/8th century, when Peter the Great traveled in Europe, he bought a bag of potatoes with a large sum of money and planted them in the palace garden, which gradually developed into folk cultivation.