Carrot means carrot. Carrot is an annual or biennial herb of the genus Carrot in Umbelliferae. Roots are fleshy, oblong and conical, and are orange-red or yellow; The stem is solitary, and the whole plant is covered with white coarse bristles; Leaf blade oblong, apex sharp; Cauline leaves are subsessile, with leaf sheaths, and the final lobes are small or slender; Flowers are usually white and sometimes reddish; Petals are unequal in length; The fruit is oval with white bristles on the edges.

Carrots originated in western Asia, and were introduced to China through Iran in the12nd century, and are now distributed all over the country. Carrots can be planted everywhere because of their lax climate choice, but they like cold and sunshine, so they are suitable for planting in neutral soil, and can grow well in slightly acidic and alkaline soil, but not in heavy clay and low humidity or poor drainage land.

The propagation mode of carrot is mainly seed propagation. Records of Lingnan Herbs have recorded the medicinal effects of carrots, which have the functions of invigorating spleen and harmonizing middle energizer, nourishing liver and improving eyesight, resolving phlegm and relieving cough, and clearing away heat and toxic materials. Carrot lignin also has the function of improving the body's anti-cancer immunity and indirectly eliminating cancer cells.

Carrots are crisp, delicious and nutritious. When cooking, they should be cooked with edible oil, which has higher nutritional value. Scientific research has confirmed that eating three carrots a day helps to prevent heart diseases and tumors. Chen Zhu once wrote a poem: "Maochai wine is good for human feelings, and radish soup and game are long", which praised the delicacy of carrots and expressed the happy feelings of poets and friends about sitting and drinking.

Origin environment, growth habits and main values of carrots;

Carrots originated in western Asia and Afghanistan, and were introduced to the European continent through Iran in the10th century, cultivated in Britain in the15th century, and introduced to the United States in the16th century. /kloc-was introduced to China through Iran in the 0/2nd century, and was introduced from China in the 0/6th century. Carrots have strong adaptability, easy cultivation and are widely planted.

Carrot seeds are easy to germinate at 20-25℃, which takes about 5 days. The stems and leaves are most suitable for growing at 23-25℃, and the seedlings can withstand high temperature above 27℃. The suitable temperature for taproot expansion is 13- 18℃. Flowering in April.

People have paid more and more attention to the nutritional value of carrots. This is mainly because carotene in carrots is the main source of vitamin A, and vitamin A can promote growth, prevent bacterial infection, and protect epidermal tissues, respiratory tract, digestive tract, urinary system and other epithelial cells.