Peanut is known as the "longevity fruit" because it has the function of nourishing and longevity, and it is rich in protein and fat. It is an important raw material for extracting peanut oil and making various foods. In addition to nutritious food, peanuts also have high medical and medicinal value. Flat peanuts and their products are rich in unsaturated fatty acids, phytosterols, resveratrol, vitamin E and vitamin C, folic acid and other plant active substances, which are very beneficial for promoting health and preventing diseases.

Technical requirements for quality of flat peanuts (1) Variety. Luhua No. 11, Huayu 22, Huayu 25. (2) Site conditions. The soil type and texture are loam or sandy loam soil, and the tillage layer is deep, the organic matter content is ≥0.9%, and the pH value is 6.5 to 7.5. (3) Cultivation management. 1. Seed requirements: use full seeds, soak for 2 to 3 days, clarity ≥ 99.0%, bud rate ≥ 80%. 2. Sowing: (1) Sowing time: from late April to early May. (2) Seeding method: mulching film. (3) Seeding density: ≤ 150,000 holes per hectare. (4) Seeding depth: 3 cm to 5 cm. 3. Field management: (1) Fertilization: ≥ 45,000 kg of fertilized organic fertilizer per hectare per year. (2) Membrane-inducing seedlings: When the peanuts are unearthed, the seedlings are opened in time, and then the soil is covered with 3 to 5 cm. 4. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. (4) Harvest. In mid-September, the upper and lower leaves of the plant became sputum, the lower leaves fell off, and more than 80% of the pods were harvested when they matured. (5) Quality characteristics. 1. Sensory characteristics: large pods, full grain, bright color, sweet in the fragrance. 2. Physical and chemical indicators: 100 fruit weight: Luhua 11 ≥ 230 grams, Huayu 22 ≥ 245 grams, Huayu 25 ≥ 235 grams. 3. Safety requirements: Product safety indicators must meet the relevant regulations of the state for similar products.

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Producers within the scope of protection of Pingdu Big Peanut Geographical Indication Products may apply to the Pingdu Municipal Bureau of Quality and Technical Supervision of Shandong Province for the use of the “Special Mark for Geographical Indication Products”, which is subject to the review by the Shandong Provincial Bureau of Quality and Technical Supervision. The General Administration announced the approval. The statutory testing agency for flat peanuts is designated by Shandong Quality and Technical Supervision Bureau.