T/HNFX 005-2022 Active Group standards

T/HNFX 005-2022 Fenqing cultivation technology specification for Chinese flowering vegetable in Jiahe County

Publish Date: 2022-09-18 Implement Date: 2023-01-01 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/HNFX 005-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Terminology (principles and coordination and cooperation)

Publish Date: 2022-09-18

Implement Date: 2023-01-01

Pages: 8 pages

Scope

Main Technical Content: 3.1 Se-rich soil contains abundant natural selenium elements, with a selenium content of no less than 0.4mg/kg, and harmful heavy metal elements present at levels below the screening values for soil pollution risk in agricultural land. 3.2 Se-rich Chinese cabbage is produced from Se-rich soil or biological resources in Jiahe County, containing trace elements of selenium. It is naturally enriched with selenium during the growth process or through selenium bio-nutrition enhancement techniques, rather than adding selenium after harvest. The total selenium content (dry weight) in the edible parts should reach 15 μg/100g~40 μg/100g, with organic selenium accounting for at least 80% of the total selenium content. 4. The soil quality of the production area should meet the requirements of NY/T 391, the atmospheric environment should comply with GB 3095, and the irrigation water should meet GB 5084 standards. 5. Production Techniques 5.1 Variety Selection: Use Guangdong Zengcheng Chinese cabbage and Wuzhou Chi Chinese cabbage varieties with strong Se-enrichment capabilities suitable for cultivation in Jiahe County, and ensure the seed quality meets the requirements of GB 16715.2. 5.2 Field Management: Implement local Chinese cabbage cultivation techniques in Jiahe County. 5.3 Fertilizer Application: Adjust fertilizer formulations based on soil and Chinese cabbage growth conditions. Apply sufficient base fertilizer and timely top-dressing with light applications, avoiding excessive nitrogen fertilizer. Fertilizer application should comply with NY/T 394, NY/T 525, and NY/T 496 standards. 5.3.1 Organic Fertilizer Application: Use fertilizers meeting the quality requirements of NY 525, with heavy metal limits meeting NY 525 standards. Apply as base fertilizer before transplanting, combined with plowing, and in a single dose. The application rate should be 7.5t/hm2~15t/hm2. 5.3.2 Inorganic Fertilizer Application: Apply the first inorganic