Yellow Flower Mountain Walnuts

Yellow Flower Mountain Walnuts

Yellow Flower Mountain Walnuts are a protected geographical indication product.

　　Yellow Flower Mountain Walnuts

　　The production area covers the current administrative regions of two towns in Tianjin's Jixian County: Sungezhuang Manchu Autonomous Township and Xiaying Town.

　　Designated under the "Letter on Defining the Origin Area of the Geographical Indication Product 'Yellow Flower Mountain Walnuts' in Jixian County" issued by the People's Government of Jixian County, Tianjin [Ji Zheng Han [2012] No. 88]; enterprise standard of Tianjin Jizhou Green Food Co., Ltd.: Q/12JX4395-2012 "Production Technical Specifications for Yellow Flower Mountain Walnuts"

　　I. Varieties

　　Liaohan No. 1, Liaohan No. 4, Zhonglin No. 1, and improved local traditional varieties.

　　II. Growing Conditions

　　Altitude within the production area is below 200 meters, with relative elevation between 50 and 100 meters. Soil type is limestone-derived leached cinnamon soil, with pH value between 6.2 and 8.0, soil layer thickness of over 1 meter, and organic matter content ≥1.4%.

　　III. Cultivation and Management

　　1. Seedling: Grafting superior strains onto local walnut seedling rootstocks.

　　2. Planting:

　　(1) Planting time: Late March to early April.

　　(2) Planting density: ≤750 plants per hectare.

　　(3) Fertilization: 50 tons of organic fertilizer per hectare annually.

　　3. Environmental and Safety Requirements: The use of pesticides, fertilizers, and other inputs must comply with relevant national regulations and must not cause environmental pollution.

　　IV. Harvesting

　　1. Harvest time: Early to mid-September.

　　2. De-greening: Manual or mechanical removal of the husk.

　　3. Drying: Natural sun drying with moisture content ≤6%.

　　V. Quality Characteristics

　　1. Sensory Features:

　　(1) Fruit Shape: Round nuts with smooth shells, light-colored, and relatively thin shells.

　　(2) Nutmeat: Plump, yellow-white in color, with a round, fragrant taste and mild astringency.

　　2. Physicochemical Indicators: Transverse diameter ≥34mm, single nut weight ≥12g, shell thickness ≤1.5mm, kernel rate ≥50%, moisture content ≤6.0%, fat content 58.5% to 64.5%.

　　 3. Safety and Other Quality Technical Requirements: Product safety and other quality technical requirements must comply with relevant national regulations.