Shuangdian Lily is a specialty of Shuangdian Town, Donghai, Lianyungang, Jiangsu. Like cool, more cold-resistant, like dry, afraid of water. If the soil moisture is too high, the bulb will rot and die. The soil requirements are not strict, but in the sandy loam with deep, fertile and loose soil, the bulbs are white in color and thick in flesh. Sticky soil is not suitable for cultivation. The roots are thick and developed and resistant to fertilizer.

Donghai County is located in the northeastern part of Jiangsu Province, under the jurisdiction of Lianyungang City. It is located at 34°11′~34°44′ north latitude and 118°23′～119°10′ east longitude. It borders with Linyi County of Shandong Province in the north, Xiangyang County in the south, Xinyi City in the west, Haizhou District in Lianyungang City in the east, Maling Mountain in the northwest and Yucheng County in Shandong Province, and along the Xinyi River in the northeast. Lianyungang City has a total area of ​​2037 square kilometers. The double-store lily is a perennial herb with a plant height of 70-150 cm. Bulbs spherical, pale white, apex often open as a rosette, formed by the aggregation of most fleshy, egg-shaped scales. The root is divided into two types: fleshy root and fibrous root. The fleshy root is called the "lower root", which is dozens of pieces, distributed in the soil layer of 45~50 cm deep, which has strong ability to absorb water and does not die in the next year. The fibrous roots are called "upper root" and "indefinite root", which occurs later, and occurs when the ground stem is pumped for about 15 days and the seedling height is 10 cm or more. The shape is slender and the number is up to 180. It is distributed on the surface of the soil. It has the function of fixing and supporting the stem on the ground, and also has the function of absorbing nutrients. It dies with the stem every year. There are bulbs and stems on the ground. Stems erect, cylindrical, often with purple spots, glabrous, green. Some varieties (such as tiger lily, sand purple lily) can produce "bead buds" between the stalks of the ground stems; some in the stems into the soil, the stems can grow "seed balls". Both the bead bud and the seed ball can be used for reproduction. The total number of leaves can be more than 100 sheets, alternate, sessile, lanceolate to elliptic lanceolate, entire, curved veins. Some varieties of leaves are inserted directly into the soil, and a few will form small bulbs and develop into new ones. Large, white, funnel-shaped, solitary on the top of the stem. Capsule long ovate with blunt edges. Seeds mostly, ovate, flat. It blooms in early June, begins in early July, blooms in mid-July, ends in late July, and dates from July to October. In addition to protein 21.29%, fat 12.43%, reducing sugar 11.47%, starch 1.61%, and calcium, phosphorus, iron, 1.443 mg of vitamin B per 100 g, 21.2 mg of vitamin C and other nutrients, the lily also contains some special nutrition. Ingredients such as colchicine and other alkaloids. These ingredients act in combination with the human body, not only have good nutritional and nourishing power, but also have a certain preventive effect on various seasonal diseases caused by dry autumn climate. Chinese medicine says that fresh lily has the effect of nourishing the heart and calming the nerves, moistening the lungs and relieving cough, and is very beneficial to people who are weak after the illness. Lily: Pick up impurities, black petals, and remove dust. Sexual sweetness; slightly bitter; slightly cold heart; lung function inherited yin and lungs; clear heart and soothe the nerves. The main yin deficiency for a long time; the blood in the sputum; the late stage of the fever; the unheated afterglow, or the irritability, insomnia, and mental sputum caused by unsatisfactory emotions; bloated; wet sore; usage and dosage: oral soup: Jiantang, 6-12 grams; or into the pill, scattered; can also steamed, porridge. External use: appropriate amount, apply. Pay attention to the cold cough and the cold and the constipation.

Technical requirements for quality of double-storey lily flowers 1. Variety of oriental lily varieties suitable for local cultivation. Second, site conditions Soil texture is sandy loam soil, soil thickness ≥ 60cm, pH value 6.5 to 7.5, organic matter content ≥ 1.5%. Third, cultivation management Seed ball requirements: circumference 15 to 18cm. 2. The number of plants per hectare is ≤170,000, and the planting depth is 6 to 10 cm. 3. Fertilization: Apply high-quality organic fertilizer ≥30t per hectare per year. 4. Plant adjustment: 4 to 8 flowers per plant, plant height ≥ 100cm. 5. Harvesting: The time is from early October to mid-July, and the largest flower buds are harvested after micro-color development. 6. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. Fourth, the quality characteristics 1. Sensory features: Pure color, bright color, good gloss; straight stems, strong, tough, uniform thickness; leaves bright green, shiny. 2. 3. Safety and other quality technical requirements: Product safety and other quality technical requirements must comply with relevant national regulations.

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Producers in the production area of ​​Shuangdian Lily can submit an application to the Quality and Technical Supervision Bureau of Donghai County, Jiangsu Province for the use of “Special Marks for Geographical Indication Products”, which will be reviewed by the Jiangsu Provincial Bureau of Quality and Technical Supervision and announced to the General Administration of Quality Supervision, Inspection and Quarantine for approval. . The testing mechanism of the double-store lily is selected by the Jiangsu Provincial Bureau of Quality and Technical Supervision in the testing institutions that meet the qualification requirements.