T/JSF 031-2025 Active Group standards

T/JSF 031-2025 Technical code of practice for directional cultivation of large seedlings of Zelkova schneideriana 'chongtian'

Publish Date: 2025-08-22 Implement Date: 2025-08-25 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/JSF 031-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Economic management

ICS Name: Plant cultivation

Publish Date: 2025-08-22

Implement Date: 2025-08-25

Scope

This document specifies the technical requirements for the directional cultivation of large seedlings of Zelkova schneideriana 'Chongtian', including nursery site selection and preparation, seedling quality, planting, management, seedling removal, and file management. This document is applicable to the directional cultivation of large seedlings of Zelkova schneideriana 'Chongtian', which are used for both ornamental and timber purposes. The "Technical Specifications for the Directional Cultivation of Large Seedlings of Zelkova schneideriana 'Chongtian'" is a group standard issued by the Jiangsu Provincial Society of Forestry. This standard details the entire process of directional cultivation of large seedlings of Zelkova schneideriana 'Chongtian', including technical requirements for nursery site selection and preparation, seedling quality, planting, management, seedling removal, and file management. Among them, the nursery site should be selected with flat terrain, deep soil layer, and slightly acidic to neutral sandy loam or loam soil. The planting spacing should be 1.5 m × 2 m. The seedlings should be selected from grafted or cuttings with strong vitality, with a height of ≥1 m and a stem diameter of ≥1.2 cm. When planting, base fertilizer should be applied and water thoroughly to help the seedlings take root. During the management period, regular loosening of the soil and weeding, reasonable fertilization, and differentiated tree shape pruning for landscape and timber seedlings should be carried out. The chest diameter of the seedlings removed from the nursery should reach 5 cm, and the requirements for soil ball wrapping and label management should comply with relevant standards. This standard provides a technical basis for the high-quality cultivation and efficient utilization of large seedlings of Zelkova schneideriana 'Chongtian'.