Xu Wenliang is produced in Xuwen County, Guangdong Province. It is a traditional Chinese traditional Chinese herbal medicine with warming, dispelling cold, digestion and pain relief. Xuwen County, Guangdong Province is the origin of Chinese ginger production and has a long history of planting.

Biological Characters Xu Wenliang is a perennial herb. Plants 40-100 cm tall, clumped, erect, rhizome transverse, cylindrical, brown-red or purplish red; leaves alternate, narrow-lanceolate-lanceolate, apex acuminate, base attenuate, entire or inconspicuous Blunt teeth, smooth leaves on both sides, leaf sheath open clasp, leaf tongue up to 3 cm, membranous, brown; racemes, corolla tube funnel-shaped, capsules spherical, not cracked, mature orange-red, many blunt Angular brown seeds. Take the roots into the medicine. The varieties of Xuwenliang ginger mainly include bovine ginger and chicken ginger. Due to the high yield of bovine ginger, it is mainly based on planting bovine ginger. Liangliang value of good ginger has a significant role in promoting human hematopoietic function. According to the "Compendium of Materia Medica", "its sexually sweet, cool, in addition to annoying heat, Lijin urinating, through three cokes, suffocating cold, suffocating Efficacy, and eyesight drive." Its spicy, warm. It has the effects of warming the stomach and dispelling cold, qi, digestion and pain relief. Indications for abdominal pain, stomach cold vomiting and diarrhea, elimination of food lag, indigestion and other symptoms. Planting situation Xuwen County has a long history of planting ginger. According to "Song History" and "Guangdong Tongzhi" and Qing "Xuwen County", Xu Wenliang Jiang was a royal tribute in the Song Dynasty. The county has planted more than 46,000 mu of ginger, accounting for more than 90% of China's national output. Xuwen County has formed a vast planting area with Longtang Town as the center and towns and towns such as Qujie, Qianshan, Xiayang, Jinhe, Xiaqiao, Nanshan and Chengbei. Among them, Longtang Town produces the best quality of Liangjiang, with a yield of more than 4,000 kg/mu. It enjoys a high reputation in the Southeast Asian market and is known as “China Longtang Liangjiang”. Xuwen County Liangjiang is mainly sold to Southeast Asia, Africa and Japan, the Middle East and other countries and regions. Producing environment Liang Jiang is warm and humid, suitable for planting in tropical and subtropical regions. Xuwen County has a tropical monsoon climate with an annual average temperature of 23.6 ° C and an annual rainfall of 1200 to 1893 mm. The soil is deep, loose and fertile, and the best soil is cultivated in red soil or sandy loam. The climate and soil conditions of the county are very suitable for the growth of good ginger. The golden ginger produced by Xu Wen is golden in color, with a sweet smell and high powder content. The planting period is from March to June every year, usually only after 3-4 years.

Xu Wenliang Jiang quality technical requirements (a) site conditions. The red loam soil in the protection range is loose and fertile, the soil layer is more than 80cm thick, the soil organic matter content is 2.5% or more, and the soil pH is between 4.5 and 6.5. (2) Cultivation management. 1. Seed selection: When harvesting in Daejeon, choose a full, robust, pest-free wet ginger seedling, cut into pieces with a knife, each piece is 15cm long, with 4 to 5 buds, mainly bovine ginger varieties. 2. Planting period: The best planting period is from March to September. 3. Planting: Planting is carried out by ploughing the plough, and the ditch is 30×60cm according to the plant and row spacing. The ditch depth is 15 cm to 20 cm, and 1600 to 1800 plants are planted in the acre. When planting, apply 1000kg of organic fertilizer per acre, and mix 75kg of superphosphate. After the seedlings are fixed, the thickness of the soil layer is 5 cm to 7 cm, and the seedlings are fully watered. Choosing rainy days can reduce the water of the buds. 4. Topdressing and cultivating soil: On the basis of applying the base fertilizer, planting the topdressing fertilizer for 3 times during the whole growth period. The first application of seedling fertilizer, about 45 days after planting, the next year, combined with spring rain and topdressing 1 time, using Niu Ligou fertilization method, 40 kg to 50 kg per mu of compound fertilizer, after the application of taro soil compacted fertilizer. The second growth fertilizer, that is, in the second year of spring, the application of ginger seedlings to seal the growth fertilizer, using the method of application, 30 kg to 35 kg of compound fertilizer per acre, 25 kg to 30 kg of potassium fertilizer, to help the strong ginger seedlings. The third time to apply ginger fertilizer, that is, in the third year of spring, when the rain is applied, 40 kg to 50 kg of potassium fertilizer per acre is applied to help the ginger, and the carbon metabolism of the ginger seedling is promoted to avoid premature aging and maintain high yield. 5. Weeding and irrigating: weeding 2 to 3 times in the early stage of growth, and weeding once in summer and autumn after sealing. Watering during drought keeps the soil moist and promotes growth balance. (3) Harvesting and packaging. Harvest from the 3rd to 4th anniversary after planting, first remove the ground stems and leaves, and then use the plow to deep turn or the taro to turn over and collect the rhizome one by one. The harvested roots were removed from the soil, the roots and the scales, and cut into 5 cm sections with a knife to dry. When drying to six or seven percent, the piles are stuffed together for 2 to 3 days, then sun-dried to dry, the skin is wrinkled, the skin is reddish brown, and the quality is best. (4) Quality characteristics. 1. Sensory features: the appearance is cylindrical, thick and strong, the texture is hard, the fiber is obvious, the section of ginger is protruding, the table is brownish red, the smell is strong and strong. The first-class dry product has a brownish red color, a hard texture, a fiber cross section, a ring pattern at the center, a length of 2.5 cm to 4.0 cm, a diameter of 1.0 cm or more, and a scent; the second-grade dry product has a grayish-brown surface, a hard texture, and a cross-section fiber. The center has a ring pattern with a length of 2.5 cm to 4.0 cm and a diameter of 0.5 cm or more and 1.0 cm or less. 2. Physical and chemical indicators: containing volatile oil 0.5% to 1.5%, the main components are 1.8-cineole and Methy-cinnamoate, there are still Eugenol, pineene , cadi-nene, etc.

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The producers within the scope of protection of Xu Wenliang's ginger geographical indication products may apply to the Zhanjiang Entry-Exit Inspection and Quarantine Bureau for the use of the “Special Mark for Geographical Indication Products”, which is approved by the General Administration of Quality Supervision, Inspection and Quarantine.