T/CDNX 023-2020 Active Group standards

T/CDNX 023-2020 Selenium-rich cultivation technical specification for water chestnut

Publish Date: 2020-05-06 Implement Date: 2020-05-28 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/CDNX 023-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Fruit and vegetable cultivation and products

ICS Name: Plant cultivation

Publish Date: 2020-05-06

Implement Date: 2020-05-28

Scope

Scope: This standard specifies the terms and definitions, production environment, cultivation techniques, selenium-enrichment technologies, timely harvesting, and file management for the cultivation of selenium-enriched water chestnuts. This standard applies to the cultivation of selenium-enriched water chestnuts. Main technical contents: 5. Cultivation techniques 5.1 Variety selection: Select varieties with high quality, high yield, and strong resistance. 5.2 Field management: Techniques such as seedling cultivation, land preparation and fertilization, timely transplanting, reasonable planting density, fertilizer and water management, and pest and disease control can be implemented according to local field management techniques. 5.3 Fertilizer application: Fertilizer application shall comply with the provisions of NY/T 394. 5.4 Chemical pest and disease control: Chemical pest and disease control shall comply with the provisions of NY/T 393. 6. Selenium-enrichment technologies 6.1 Selenium supplementation principles: When the selenium content in water chestnuts produced naturally does not meet the requirements of GH/T 1135, selenium can be supplemented through artificial techniques. 6.2 Selenium fertilizers: Selenium fertilizers or selenium soil conditioners registered by the state shall be selected for selenium supplementation. 6.3 Supplementation methods: Leaf surface supplementation and rhizosphere supplementation. One or both supplementation methods can be selected according to actual production needs. 6.3.1 Leaf surface supplementation: Prepare a selenium solution with a concentration of 70mg/kg to 120mg/kg. Supplement selenium once each at the peak growth period, flowering period, and early fruit period, applying 450kg to 600kg of selenium solution per hectare evenly. Ensure that the selenium solution is fully sprayed onto the leaves, with no dripping. Apply selenium on cloudy days or after 4 PM on sunny days. Use a fine mist sprayer to spray the selenium s