Located in the northwestern part of Chuxiong Prefecture in Yunnan Province, Dayao County is the country's famous “Dao Yao Walnut” fine variety. Da Yao walnut is of high quality, with moderate shell thickness, easy to extract and high kernel yield; white, delicious, nutritious and easy to preserve; high in unsaturated fatty acid content and long shelf life, it has become famous Excellent varieties of the country.

Dayao Walnut is a geographical indication certification mark. The origin is from Jinbi Town, Longjie Township, Zhaojiadian Township, Xinjie Township, Yuhua Township, Guihua Township and Bay in the administrative area of ​​Dayao County, Chuxiong Yi Autonomous Prefecture, Yunnan Province. 12 townships (towns) including Bixiang, Tiexun Township, Santai Township, Sanchahe Township, Liuyi Town and Shiyang Town. Dayao walnut has the characteristics of fast growth, long life and high yield. Its fruit shell is thin, white, high in kernel rate, good in taste and high in nutritional value. It is one of the fine varieties of Yunnan walnut. Dayao County has a long history and culture, a rich ethnic customs and a unique human landscape. It is the origin of the Yi culture. It enjoys the “Hometown of Chinese Walnuts”, “Hometown of Yi Medicine”, “Hometown of Yi Culture”, and “Buddhist Capital of Yizhong” "And the "Holy Hole Holy Land" reputation. Da Yao walnut has a long history of cultivation, production and processing. It has a history of more than 300 years and is a traditional and famous product in Yunnan. Dayao walnut is famous for its moderate shell thickness, full whiteness, sweet taste, nutrient-rich, good health care function and long shelf life. Located in the northwestern part of Chuxiong Prefecture in Yunnan Province, Dayao County is the origin of the famous “Da Yao Walnut” variety. Da Yao walnut is of high quality, with moderate shell thickness, easy to extract and high kernel yield; white, delicious, nutritious and easy to preserve; high in unsaturated fatty acid content and long shelf life, it has become famous Excellent varieties of the country. Walnut, also known as walnut, longevity fruit, belongs to the genus Walnut, is a deciduous tree. The whole body of walnut plant is treasure, and its nut is rich in protein, lecithin, riboflavin, carrot, linoleic acid glyceride, linolenic acid, amino acid, phosphorus, magnesium, iron, manganese and other minerals required by the human body. And trace elements. Long-term consumption helps to improve brain, beauty and beauty, warm lung and kidney, anti-cancer and anti-cancer, is an ideal natural health food. Da Yao walnut is large, thin, and full of white nuts. It is also often called "paper walnut". Walnuts are sweet, flat, and non-toxic. Return to the lungs, kidneys, and liver. It has the functions of nourishing the kidney and nourishing the blood, moistening the lungs and invigorating the qi, moistening the intestines and stopping the belt, strengthening the muscles and strengthening the bones, moistening the blood vessels, moistening the muscles, making the teeth, and filling the teeth. In 1983, Dayao Walnut was awarded the Export Quality Product by the Ministry of Foreign Trade and Economic Cooperation and awarded the “Shell Walnut” Certificate of Honor; in 2000, Dayao Walnut passed the EU Organic Food Certification; in 2001, Dayao County was confirmed by the State Forestry Administration. It is one of the 100 “economic forest industry demonstration counties” in the country; in October 2007, Dayao County was elected as the first rotating chairman of the China Walnut Industry Development Cooperation Group; in September 2008, Dayao County successfully hosted the first China Walnut Conference; On July 28, the application for registration of the “Da Yao Walnut” geographical indication certification trademark was approved by the Trademark Office of the State Administration for Industry and Commerce. Dayao County has a long history of walnut planting. As early as the end of the 16th century, there were a large number of walnuts produced in the Yucao River Basin and the Baicaoling Mountains in Dayao County. Da Yao has a mild climate and abundant products. It is the hometown of Chinese walnuts. Da Yao walnut has the advantages of large fruit, uniformity, thin shell, white kernel, sweet flavor, high protein, low fat and no deterioration. It is the top grade in Chinese walnut.

Da Yao walnut quality technical requirements First, the variety of local "three walnuts" excellent clones. Second, the site conditions are 1600 to 2400m above sea level. The soil type is brown soil, purple soil, soil organic matter content ≥ 2%, soil pH value 5.5 to 7. Third, cultivation techniques Seedling: Adopting the seedlings of the walnut walnut as the rootstock for grafting and breeding. 2. 3. Fertilization: mainly based on decomposed organic fertilizer, each plant applies organic fertilizer ≥ 50Kg per year. 4. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. 4. Harvesting Before and after the annual Bailu Festival, the color of the green peel is changed from shallow to deep, and the cracked fruit is harvested after reaching 70%. V. Quality characteristics 1. Sensory features: the nuts are obovate, the sutures are uplifted, and the whites and nucleoli are full. The taste is good, the taste is sweet and the taste is light. 2. 3. Safety and other quality technical requirements: Product safety and other quality technical requirements must comply with relevant national regulations.

Apply to：
Producers within the Da Yao walnut production area may apply to the Quality and Technical Supervision Bureau of Dayao County of Yunnan Province for the use of the “Special Mark for Geographical Indication Products”, which shall be reviewed by the Yunnan Provincial Bureau of Quality and Technical Supervision and announced to the General Administration of Quality Supervision, Inspection and Quarantine for approval. . The inspection organization of Dayao Walnut is selected by the Quality and Technical Supervision Bureau of Yunnan Province in the inspection institutions that meet the qualification requirements.