番薯、玉米和土豆均产自南美洲,明代中期引入我国,在清代的中期得到全面推广。菠菜原产于伊朗,在唐代贞观21年(公元647年)传入我国。番茄原产于南美洲,十八世纪初传入我国,当初仅作为观赏植物。十九世界中叶才作为蔬菜在我国普遍载培。西瓜原产于非洲,我国是在南宋初期引入的。 Sweet potatoes, corn and potatoes are produced in South America. They were introduced into China in the middle of the Ming Dynasty and were widely promoted in the middle period of the Qing Dynasty. Spinach was originally produced in Iran and was introduced to China in the 21st year of the Tang Dynasty (AD 647). The tomato was originally produced in South America and was introduced to China in the early 18th century. It was originally used as an ornamental plant. The mid-nineteenth world was generally used as a vegetable in our country. Watermelon is native to Africa and our country was introduced in the early Southern Song Dynasty.