What is the origin of carrots watermelon cucumber walnuts grapes?

Watermelon cucumber walnuts grapes carrots in our history is with the Silk Road spread open.

Han Wu Di period, Zhang Qian opened the commercial road to the West, for us to bring back grapes, walnuts (walnuts), pomegranates, garlic, carrots (sesame), carrots (fava beans), carrots (cucumbers), carrots, alfalfa, and other fruits, vegetables and crops, the Chinese people can eat greatly increased.

Since then, with the Silk Road open, small onions, peas, lentils, spinach, lettuce, squash, eggplant, lettuce, watermelon fennel, kale, figs, cantaloupe, cotton, sugar cane green beans and pepper and so on into China. These fresh fruits and vegetables from the northwest region, that is, Hu Di, all with Hu are basically foreign, to put it bluntly is the Hu people there passed it on.

Expanded

Ming Dynasty period, with Zheng He went to the West and the Europeans to the East, the novelty of the melon and vegetables also came to the many fruits and vegetables from the South Seas and the Americas, such as the fruits and vegetables and crops of the tomato state came to China, tomato pepper (pepper, chili peppers).

Guava, sweet potatoes (sweet potatoes), tomatoes (tomatoes), papaya (papaya), peanuts, corn, potatoes, beans, zucchini, bitter gourd, mango, pineapple, sunflower and even tobacco, wherever the basic with fannish are foreign. The introduction of these foreign varieties, especially high-yielding sweet potatoes and potatoes and corn, led to a surge in China's food production and a dramatic expansion of its population.

During the Qing Dynasty, many more new fruits and vegetables were brought into China by foreigners, such as cabbage, onions, onion heads, celery, cauliflower and strawberries. At the end of the Qing Dynasty, basically all the existing traditional vegetable varieties appeared in China.

China's introduction of foreign crops in fact has a characteristic, but where the word "Hu", most of the two Han, the North and South Dynasties into China; with the word "tomato", it is the Ming Dynasty after the introduction of the American crops into China;

and The third with the word "foreign", onions, cabbage, etc., generally is the end of the Qing Dynasty and the Republic of China into China. Therefore, the three words "Hu", "Pan", "foreign", generally tell us the different times these crops were introduced to China.