T/CDNX 009-2020 Seedling cultivation technology for winter melon with high selenium content
T/CDNX 009-2020 Seedling cultivation technology for winter melon with high selenium content
Basic Information
Scope
Scope: This standard specifies the terminology and definitions, production environment, cultivation techniques, selenium-enrichment technologies, timely harvesting, and file management for the cultivation of selenium-enriched winter melons. This standard applies to the cultivation of selenium-enriched winter melons. Main technical content: 4. Production environment: The base should be located in areas with selenium-rich soil, and the production environment should comply with the requirements of NY/T 391. 5. Cultivation techniques: 5.1 Variety selection: Select varieties with high quality, high yield, and strong resistance, and the seed quality should comply with the requirements of GB 16715.1. 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 requirements of NY/T 394. 5.4 Chemical pest and disease control: Chemical pest and disease control should comply with the requirements of NY/T 393. 6. Selenium-enrichment technologies: 6.1 Selenium supplementation principles: When the selenium content in winter melon fruits 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 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 once each at the budding stage, flowering stage, and young fruit stage, with 450kg to 700kg