T/HHACA 012-2021 The high-quality agricultural products of Heilongjiang Province: Wild chestnuts from the Xing'an Mountains, Group Standards

Scope

Scope: This standard specifies the geographical production area, requirements, experimental methods, inspection rules, and marking, packaging, transportation, and storage for wild hazelnuts from the Lesser Khingan Mountains in Heilongjiang Province, which are classified as high-quality agricultural products. This standard applies to all series of wild hazelnuts from the Lesser Khingan Mountains in Heilongjiang Province, including bulk and specification products of the hazelnut series. Main technical content: 3. Terminology and definitions: The Lesser Khingan Mountains region is home to flat hazelnuts and woolly hazelnuts, with flat hazelnuts being more prevalent and woolly hazelnuts including variants. The region boasts abundant seed resources and ecological types of hazelnut distribution can be divided into scattered, associated, and pure hazelnut forests. The terms and definitions established in GB/T 37111-2018 and those defined herein apply to this standard. 3.1 Scattered type: Found on the edges of well-lit hazelnut forests. 3.2 Associated type: Grows alongside pine or Mongolian oak (Zizyphus) forests. 3.3 Flat hazelnuts: Also known as fire hazelnuts in the Lesser Khingan Mountains region. These are deciduous shrubs with a height of 1-2 meters, reaching up to 2.9 meters. The leaves are inverted oval or round, with a flat or concave tip and a triangular protruding central point. The leaf surface is hairless, while the leaf back is covered with sparse short fuzz. The fruit pods are bell-shaped, with 1-6 seeds per pod, and up to 10-12 seeds in some cases. The nuts are yellow, brown, or reddish-brown, spherical in shape, and may also be flattened, elongated, or conical. The thick, smooth skin encloses sweet, fragrant kernels. 3.4 Woolly hazelnuts: Deciduous shrubs with a height of 2.5 meters. The leaves are broad oval or elliptical, gradually tapering at the tip or tail. The leaf surface may be covered with short fuzz or be hairless, while the leaf back is densely

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