T/HNNX 0005-2021 Millet from Huining
T/HNNX 0005-2021 Millet from Huining
Basic Information
Scope
Scope: This standard specifies the terms and definitions, production area, technical requirements, testing methods, inspection rules, marking, packaging, transportation, and storage of Huaning Mianzi, a geographical indication product approved by the People's Government of Huaning County in accordance with laws and regulations such as the Trademark Law of the People's Republic of China and registered by the Trademark Office of the State Administration for Industry and Commerce (registration number: 23608345) (Huan'an Government Letter [2017] No. 11); Main technical content: Varieties should be selected based on local climate and soil characteristics, with high-yielding, stress-resistant excellent varieties suitable for local conditions. At present, the main high-quality Mianzi varieties in Huaning County include Longmian 10, Longmian 11, Longmian 12, and Longmian 13. Site conditions: Huaning Mianzi grows in a temperate monsoon climate in the Loess Plateau hilly and gully region of Longxi, with an altitude below 2,200 m, an average temperature of 6–9 °C, and a growing period of ≥100 days with a cumulative temperature of over 2,000 °C. The annual rainfall ranges between 180 and 450 mm, with a frost-free period of 155 days and 2,696 hours of sunshine. The area has abundant water resources, with major rivers including Zulih River, Guanchuan River, and Kushui River. The soil features deep layers, fertile soil, loose texture, and good aeration, with a salt content of less than 2.0 g/kg, organic matter content of more than 10.0 g/kg in the topsoil, total nitrogen of 0.4–0.8 g/kg, ammonium nitrogen of 50–80 mg/kg, and rapid phosphorus of 5–14 mg/kg. The soil pH should be between 6.5 and 7.5, and the environmental quality of the soil should meet the second-level requirements of GB 15618. Environmental and air quality should meet the first-level requirements of GB 3095. Irrigation water should meet the requirements of GB 5084. Site selection: Selection of plains, plateaus,