T/CDNX 021-2020 Active Group standards

T/CDNX 021-2020 Pitrichys selenium-rich cultivation technical specifications

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 021-2020

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 should comply with the provisions of NY/T 394. 5.4 Chemical pest and disease control: Chemical control should comply with the provisions of NY/T 393. 6. Selenium-enrichment technologies 6.1 Selenium supplementation principles: When the selenium content in water chestnut tubers from naturally selenium-enriched production 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 should be selected. 6.3 Selenium supplementation methods: Leaf surface selenium supplementation and rhizosphere selenium supplementation. One or both methods can be selected according to actual production needs. 6.3.1 Leaf surface selenium supplementation: Prepare a selenium solution with a concentration of 70mg/kg to 120mg/kg. Supplement selenium twice during the stage of tillering and transplanting, and once during the stage of tuber enlargement. Spray 450kg to 600kg of selenium solution evenly per hectare each time. Ensure that both sides of the leaves are sprayed with selenium solution until no water droplets remain. Selenium should be applied o