T/SXZYC T/SXZYC004-2024 Active Group standards

T/SXZYC T/SXZYC004-2024 Qinghuai Seedling Quality Standards

Publish Date: 2024-09-10 Implement Date: 2024-10-05 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/SXZYC T/SXZYC004-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Terminology (principles and coordination and cooperation)

Publish Date: 2024-09-10

Implement Date: 2024-10-05

Scope

Main Technical Content: (1) Scope of Application of the Standard This standard specifies the general format and requirements for writing quality grading standards for seedlings of Forsythia suspensa (Thunb.) Vahl. The standard applies to the establishment and application of quality grading standards for seedlings (roots and stems) of Forsythia suspensa (Thunb.) Vahl. in the Oleaceae family, including quality grading, cultivation, and market transactions. (2) Rationale for Standard Development In Forsythia cultivation, roots and stems are commonly used as propagation materials, hence they are also referred to as seedlings. The quality of seedlings directly impacts the yield and quality of Forsythia medicinal materials. Therefore, it is necessary to conduct research and data measurement on the use of roots and stems in major Forsythia cultivation bases and develop quality standards for Forsythia seedlings. 1. Collection of Forsythia Seedling Samples Forsythia is a perennial plant of the Oleaceae family with a clear source. Wild Forsythia resources are abundant, primarily in Shanxi, Shaanxi, Henan, and Hebei provinces. However, cultivation scale is limited, with some used for medicinal fruit harvesting and others for urban landscaping. In cultivation, two-year seedlings are often chosen as propagation materials. Materials used: Two-year seedlings from Forsythia nurseries in Shanxi, Shaanxi, and Hebei, totaling 18 samples (see Table 1). Each sample included 100 randomly selected seedlings for quality indicator testing. Most nurseries shorten seedlings to approximately 50 cm before sale to facilitate sprouting, hence seedling height was not included as a reference indicator. Key quality indicators for Forsythia seedlings include stem diameter, root length, and root width. No Forsythia seedlings were collected from Shaanxi, as market research revealed most Shaanxi seedlings originated from Yuncheng, Shanxi. Due to Forsythia's four-year fruiting cycle,