Electronic watches, kiwis, carrots, potatoes and silk, where are their origins?

1955, Switzerland successfully developed the first balance spring electronic watch. Since then, the watch industry has entered the electronic age, breaking the stable pattern of mechanical watches for about 200 years.

2. Kiwifruit: China

China is the origin of kiwifruit, which was introduced to New Zealand in the early 20th century. On June 6, 2008, 165438+ was held in New Zealand. More than 200 experts from 19 countries agreed that China is the origin of kiwifruit, and the origin of kiwifruit in the world is Wuduhe Town, Yiling District, Yichang City, Hubei Province.

3. Carrots: West Asia

Carrots are native to West Asia, and Afghanistan is the earliest place to grow purple carrots, with a planting history of more than 2,000 years. /kloc-in the 0/0 century, it was introduced to the European continent through Iran and evolved into a short conical orange. /kloc-was cultivated in Britain in the 0/5th century, and/kloc-was introduced to America in the 0/6th century. /kloc-was introduced into China through Iran in the 20th century.

4. Potatoes: South America

Originated in the Andes in South America, the history of artificial cultivation can be traced back to southern Peru from about 8000 BC to 5000 BC. The main potato producers are China, Russian, Indian, Ukrainian and American.

5. Silk: China

Silk is a specialty of China. The ancient working people in China invented and mass-produced silk products, which opened the first large-scale commercial exchange between the East and the West in the history of the world, and was called the Silk Road.

Extended data

In ancient times, silk was a textile woven from silk (mainly mulberry silk, but also a small amount of tussah silk and cassava silk). Due to the expansion of modern textile raw materials, all textiles woven with man-made or natural filament fibers can be called silk in a broad sense. Silk woven from pure mulberry silk is also called "real silk".

At first, China strictly controlled the technical circulation of silk weaving and sericulture, and prohibited it from flowing to foreign countries. However, with the assistance of immigrants from China, North Korea successfully achieved a breakthrough in sericulture technology in the first 200 years. In addition, sericulture was successfully carried out in Hotan River Basin (500-300 years ago) and India (300 years ago). However, it was about 550 years before the Roman Empire got silkworm eggs and developed sericulture technology.

Baidu encyclopedia-electronic watch

Baidu encyclopedia-kiwi fruit

Baidu encyclopedia-potato

Baidu encyclopedia-carrot

Baidu encyclopedia-silk