In China's ancient books, it is also called passion fruit, chrysanthemum, sunflower and so on. In Europe, it is called Sunflower, and in some countries, it is called Sungrass, Lotus and Sunflower. Sunflower originated in southwest North America and was originally a wild species. After cultivation and appreciation, it quickly spread all over the world, and/kloc-was introduced to Europe at the beginning of the 6th century.
Sunflowers have been cultivated in China for at least 400 years. In recent 20 years, sunflower seed production has developed rapidly, and the world sunflower seed output has become an important oil after soybean, and it has also been widely cultivated in China.
Extended data:
type
1, edible type
Big kernel, thick skin and low kernel rate, accounting for about 50%. The oil content of nuts is generally 40% ~ 50%. The pericarp is mostly black and white. Suitable for frying food or feed.
2. Oils
Small grain, full kernel, thin skin, high kernel yield, accounting for 65% ~ 75%, kernel oil content generally reaches 45% ~ 60%, and the peel is mostly black or gray stripes, which is suitable for oil extraction.
3. Intermediate type
The growth and economic characters of this type are between edible type and oil type.