Dahejia egg skin walnuts are thin and mellow due to the skin, the kernels are full, the oil content is high, there is no interlayer between the peach kernels, and the kernel is easy to remove. The shell can be broken by hand, and the folk crown is “egg skin”. Dahejia egg skin walnut is known as “a famous brand” because it is rich in oil, delicious in taste and good in health. The products are sold well both inside and outside the province and enjoy the reputation of the land.

Dahejia egg-shell walnut has a long history of cultivation. The local people of all ethnic groups have been planting walnuts in front of and behind the house, in the fields, and in the mountain plains. They have been mainly scattered or concentrated in small amounts. Dahejia egg skin walnut tree is strong, tree posture is open, high yield, adaptability, cold and drought tolerance, strong tree, full nucleoli, easy to take advantage of, high yield and high quality, nucleolus light yellow or light Amber, full-bodied, no odor, sweet and delicious, high oil content, moderate protein and fat content. Compared with the National Standards for Nuclear Peach (Excellent) and the local P. quince quality indicators, the main physical and chemical indicators are superior to the national standards (superior) and are superior to the local common walnuts. In particular, because the thickness of the shell and the thickness of the egg shell are almost the same, the title "egg skin" is indeed true. Dahejia egg skin walnut is also rich in amino acids, 18 kinds of amino acid content is mostly higher than the local common walnut content, potassium, sodium, zinc, iron, calcium, magnesium, copper, phosphorus, selenium and other essential minerals are also very rich. Some minerals are significantly higher than the local common walnuts. Open the "Linxia Hui Autonomous Prefecture" and "Jishishan County", in the color pictures arranged in front of the book, each has a color photo titled "Thin Skin Walnut" and "Dahe Home Egg Walnut" and other local famous products The photos are arranged together. The walnuts in the plate in the photo, the shell is smooth, and several shells have been broken, revealing a full yellowish walnut kernel. It can be seen that the shell is very thin and there is no interlayer between the peaches. This is the famous big river home egg skin walnut. Dahejia egg skin walnut is thin and mellow due to the skin, the kernel is full, the oil content is high, and the renmin is very easy. The hand can be broken by hand, and the folk crown is “egg skin”. Dahejia egg skin walnut is known as “a famous brand” because it is rich in oil, delicious in taste and good in health. The products are sold well both inside and outside the province and enjoy the reputation of the land. Edible walnuts, also known as walnuts, walnuts, deciduous trees, tree heights of 20-40 meters, canopy coverage of up to 400-1200 square meters, early summer flowering, unisexual, monoecious, catkins drooping, stone fruit called ellipse Shape or sphere. Ren is rich in oil, delicious and fertile, edible, oil-extracted, can also be used as medicine, warm and sweet, warm and tonifying kidney, attending to suffer from cold and asthma, kidney deficiency and low back pain. Rich in nutrition, it is the top of the brain. Characteristics of the production area The mountain pecans have been planted for more than 2,000 years. Each town has a variety of cultivation, with more varieties. The annual output is about 100,000 kg, but the egg skin of Dahejia Town and Sibaozi Township is the most famous. Dahejia, Liuji, Shijie and other towns in the valley of the south bank of the Yellow River are the best areas for light, heat, water and soil in the county. They provide good natural conditions for the growth and development of egg-shell walnuts. The origin and main producing area, this walnut shell is smooth and thin, like u0026quot;egg skinu0026quot;, with good quality and high rate of kernel. The output is high, the yield per plant can reach 90-120 kg, and the supply of products is in short supply.

Dahejia egg skin walnut quality technical requirements First, the variety of local native walnut varieties. Second, the site conditions The altitude of the production area is 1700m to 1950m, the soil is black loess and red soil, the soil pH is 6.3 to 8.2, the organic matter content is ≥1%, and the soil thickness is ≥1m. Third, cultivation management Seedlings: grafted seedlings with common seedlings as rootstocks. 2. 3. Fertilization: mainly organic fertilizer, saplings apply 15kg of decomposed organic fertilizer per plant per year; in the first fruit stage, 25kg of decomposed organic fertilizer is applied per plant per year; in the fruit-bearing period, 35kg of decomposed organic fertilizer is applied per plant per year. 4. Plastic trimming: The branches in the crown are evenly distributed to ensure ventilation and light transmission. 5. Fresh fruit harvesting: When more than 1/3 of the whole plant is naturally cracked, it can be harvested. 6. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. Fourth, processing De-greening: Can not peel off on the day of harvesting, peeling off in time after stacking. 2. Five, quality characteristics Sensory features: fruit shape shell surface characteristics shell color seed color color mouthfeel oval round stitching, smooth fruit surface light yellow yellow white sweet 2. Physical and chemical indicators: Single fruit weight (g) Shell thickness (mm) Kernel yield (%) Fat content (%) Protein content (%) u003e8.0 1.0 to 1.6 50% to 60% u003e52 u003e16 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 within the Dahejia egg skin walnut production area may apply to the Jishishan County Quality and Technical Supervision Bureau of Gansu Province for the use of the “Special Mark for Geographical Indication Products”, which is reviewed by the Gansu Provincial Bureau of Quality and Technical Supervision and reported to the AQSIQ for approval. After the announcement. The legal inspection agency for Dahejia egg skin walnut is designated by Gansu Provincial Quality and Technical Supervision Bureau.