T/NAASS 143-2025 Active Group standards

T/NAASS 143-2025 Code of practice for mechanization-suitable tomato seedlings

Publish Date: 2025-11-06 Implement Date: 2025-12-05 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/NAASS 143-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Technical management

ICS Name: Plant cultivation

Publish Date: 2025-11-06

Implement Date: 2025-12-05

Scope

This document specifies the technical content such as terms and definitions, environmental conditions, substrate and tray selection, seeding, seedling management, pest and disease control, and commercial seedling standards for mechanized transplanting of tomato seedlings in Ningxia. This document is applicable to the mechanized and factory-scale production of tomato seedlings in Ningxia. 3 Terms and Definitions The following terms and definitions are applicable to this document. 3.1 Mechanization-suitable seedlings Refers to standardized seedlings with morphological and physical characteristics that meet the requirements for mechanized transplanting operations. 4 Environmental Conditions The construction and equipment of the nursery meet the requirements of NY/T 2442. The irrigation water quality meets the requirements of GB 5084. 5 Substrate and Tray Selection 5.1 Substrate The substrate meets the requirements of NY/T 2118. 5.2 Trays For semi-automatic transplanting machines, trays with 72 or 98 holes are selected; for fully automatic transplanting machines, trays made of polystyrene (PS) or polyethylene terephthalate (PET) with 128 holes are selected. 6 Seeding 6.1 Varieties Select varieties with compact plant types, disease resistance, high quality, high yield, and good marketability that are registered in China. The seed quality meets the requirements of GB 16715.3. 6.2 Sowing Period The sowing period is determined based on the transplanting period. For semi-automatic transplanting machines, the seedling age is 30–35 days in summer and autumn and 40–45 days in winter and spring; for fully automatic transplanting machines, the seedling age is 25–30 days in summer and autumn and 35–40 days in winter and spring. 6.3 Seed Disinfection Uncoated seeds should be disinfected in accordance with NY/T 2312. 6.4 Seeding Use a mechanical precision sowing line to complete tray loading, hole pressing, seeding, covering, and watering