Day lily is a kind of flower food with high nutritional value and medicinal value. Chinese medicine believes that eating day lily can make people "calm and carefree", so day lily is also called "worry-free girl". Day lily, also known as day lily, tranquilizing vegetable, worry-free girl and day lily, is a famous ornamental flower, which is listed as a vegetarian treasure together with mushrooms and fungus, and its stems, roots and leaves can also be used as medicine. The cultural origin of the day lily, which is known as "China's special vegetable", is also known as day lily, worry-free girl, day lily, flower for treating anxiety, deer chop, tranquilizing dish, brain tonic dish and vegetable. Golden color, rich fragrance, fragrant, smooth, tender, waxy and sweet. Since ancient times, it has been called the sum of "table treasures" and "famous flowers, used as medicine and eaten as delicacies". According to legend, before the uprising of Chen Sheng, the leader of the peasant uprising at the end of Qin Dynasty, he was poor and sick, and his whole body was swollen. He is poor and hungry, so he often asks for food. I once met a kind old lady Huang who cooked some daylily for him. After a while, Chen Sheng's edema gradually subsided, his condition recovered and his body became stronger. Later, he and Guangwu organized peasant uprisings and became the first batch of peasant leaders in history. Chen thanked Huang for her kindness, invited her to live at home, and said that day lily is a girl without sadness. When Chen Sheng and Guangwu led the peasant uprising army to capture Chenzhou (now Huaiyang County, Henan Province) and made its capital king, the soldiers trampled the vibrant day lilies into disfigurement in the war. There is a local girl named Lily. She is very sorry to see this situation, so she carefully manages and trains them. As a result, these day lilies came back from the dead. These trees are graceful and full of charming flowers. People named the day lily to commemorate the girl named day lily. During the Qing Dynasty, local officials in Yongzhou (Qidong County and Qiyang County were not separated at that time, but were under the jurisdiction of Yongzhou Government) began to pay tribute to the court as local tribute. Ji Xiaolan was an important court official in Qing Dynasty, and also a romantic wit with iron mouth and copper teeth. He loved daylily most. When he saw the day lily on the dining table, he couldn't help being excited. Zan: Day lily is a good dish, refreshing and crisp, with endless aftertaste. People who often eat daylily are smart. Dr. Sun Yat-sen used "Siwutang" as his diet recipe for fitness. "Four things", namely day lily, black fungus, bean bowl, bean sprout and day lily, rank first. "Siwutang" has complete nutrients, which is a good recipe for enriching blood, nourishing blood and caring skin. It is also a rare and inexpensive dish in daily vegetarian diet. Daylily is a characteristic agricultural and sideline product in China. In some other countries in the world, such as Germany, France, Italy, Australia, Australia, New Zealand and Thailand, it is cultivated as an ornamental flower, and only in China is it edible. It was originally a flower plant that grew in the wilderness of mountainous areas. Cultivation in China has a long history, which can be traced back to more than 2,000 years ago. At present, its planting history in Qidong, Shaoyang, Gansu and other places in Hunan Province is about four or five hundred years. In the first year of Hongzhi in Ming Dynasty (1448), Guan Fumin and Guan Fushun, villagers of Yongnian Village, Guanjiazui Town, Qidong County, began to transplant and cultivate day lilies in Dafu Garden and Doudou Garden in the village. During the reign of Kangxi in Qing Dynasty, it was also planted in Huangtupu, Buyun Bridge, Jiangjiaqiao, Taihetang, Shaodong County, Gansu and other places in Qidong County. At present, the planting area of day lily in China is nearly 300,000 mu, mainly distributed in Hunan, Gansu, Henan, Sichuan, Gansu, Hubei, Anhui and other provinces. Among them, Qidong County in Hunan Province has increased from about 6.5438+0.9 million mu at the beginning of liberation to 6.5438+0.6 million mu now. Day lily is suitable for all kinds of soil, but red and yellow soil is the best, with an average yield of more than 800 kg of dried vegetables per mu (every 7 kg of fresh vegetables 1 kg of dried vegetables). Every year, 65438+February in the solar calendar is the best time for rootstock transplantation, and the end of May to the end of August in the solar calendar is the picking period. The best time for daily picking is before 10, and it is easy to blossom after 10. Its effective growth period is 9- 10 years, and it should be ploughed and replanted 9- 10 years after transplanting. In the mid-1980s, researchers, mainly from Qidong Academy of Agricultural Sciences, conducted in-depth research on the breeding of new day lily varieties and high-yield cultivation and propagation techniques, and cultivated a large number of new day lily varieties, which were divided into three types: early maturity, middle maturity and late maturity. The types of early maturity are: April flower, May flower, early flower and early tea mountain striped flower. Medium-mature types include: short arrow flower, high arrow flower, fierce flower, white flower, eggplant flower, fork flower, long-handled flower, Darkmouth flower, tea stripe flower, fireworks flower, talented flower, red-edged flower, blunt flower, wooden stick flower, money flower, green leaf flower, thick arrow flower, high-edged flower and long-billed flower. There are four late-maturing types: inverted arrow flower, thin leaf flower, mid-autumn flower and big leaf flower. At present, there are three middle-maturing varieties in Qidong area, namely, Chongli Flower, Mengzi Flower and Baihua Flower. Day lily in Qidong County was named as "China Native Regional Product" on June 5438+February 10, 2003 because of its unique characteristics. Compared with the fresh day lily in Gansu and northern China, its appearance features are: Qidong is yellow or bluish yellow, with uniform color and no green strips, while most other producing areas are bright yellow, with uneven color and no luster and green strips. In terms of size and length, the single plant in Qidong is slightly shorter, while the single plant in other producing areas is slightly longer and thicker. Sensory characteristics: the smell has the unique fragrance of yellow pollen, no toxic smell and other peculiar smell, no insect spray, mildew and impurities; The meat is thick, with no more than 2300 dried flowers per kilogram. Physical and chemical properties: the moisture content in Qidong is not more than 15%, the total sugar content is not less than 3.75%, and the protein content is not less than 1 1%. As a good medicine, day lily has been recorded in various medical books for a long time. Incomplete statistics: "Compendium of Materia Medica": "Daylily is sweet in taste, slightly cool in gas, can dispel dampness and diuresis, clear away heat and relieve stranguria, quench thirst and relieve annoyance, open the chest and expand the diaphragm, so that people are calm and have no sense of depression". Disaster relief herbs: "Sweet and nontoxic." Herbal medicine in southern Yunnan: "Sweet and flat in taste", "Treating women's deficiency of fire and blood." Outline: "Sweet, cool and non-toxic"; "Xiaoshi, hot and humid." "Rihuazi Materia Medica": "Treat red urine and body heat, except alcohol jaundice." "Materia Medica Illustration": "Consolidate the five internal organs, benefit the mind and improve eyesight. Be a chest diaphragm. " "Lingnan Medicine Collection Record": "Decoct water and drink it to cure toothache." "An Wei Medicinal Materials": "Treating night blindness." Medicinal Diet 1 issue of Brain-nourishing Food-Yellow Flower1998; Dish ";" Day lily cures intractable diseases, No.24, 2000, edited by Yang Rixin, Food Composition Table of China published by Peking University Medical Press in February, 2002, edited by Qu Fan, Anti-cancer Food Chinese Medicine published by Jiangsu Science and Technology Press 1994, and Day lily dual-purpose food and medicine published by China Food News1999 on March 29th. Dietotherapy Prescription of Daylily published by China Food News1999129 October, Dictionary of Traditional Chinese Medicine (II) published by Shanghai People's Publishing House in June 5438+0997 and Encyclopedia of Secret Recipes of Traditional Chinese Medicine published by China Medical Science and Technology Publishing House all clearly describe the nutritional, health care and medicinal value of Daylily.