LY/T 2946-2021 English PDFUS$169.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. LY/T 2946-2021: Technical regulations of seedling cultivation for Chionanthus retusus Lindl. et Paxt. Status: Valid LY/T 2946: Historical versions
Basic dataStandard ID: LY/T 2946-2021 (LY/T2946-2021)Description (Translated English): Technical regulations of seedling cultivation for Chionanthus retusus Lindl. et Paxt. Sector / Industry: Forestry Industry Standard (Recommended) Classification of Chinese Standard: B61 Word Count Estimation: 7,742 Issuing agency(ies): State Forestry and Grassland Administration LY/T 2946-2021: Technical regulations of seedling cultivation for Chionanthus retusus Lindl. et Paxt.---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Technical regulations of seedling cultivation for Chionanthus retusus Lindl:et Paxt: ICS 65:020:20 B61 People's Republic of China Forestry Industry Standard Technical regulations for tassel tree seedling raising Published on 2021-06-30 2022-01-01 Implementation Released by the State Forestry and Grassland Administration forewordThis document is drafted in accordance with the rules given in GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Compilation of Standards": This document replaces LY/T 2946-2018 "Technical Regulations for Tassel Sowing and Raising Seedlings": Compared with LY/T 2946-2018, the main technical changes is as follows: ---Added the requirements for soil acidity and alkalinity, soil disinfection methods and requirements for nursery selection; --- Added methods and requirements for making beds when raising seedlings in the field; ---Added the requirements for the quality of tassel tree seeds used for sowing; --- Added the method of seedbed sowing; ---Increased the technology of cutting ear garden construction and cutting technology in the content of cutting technology; --- Added the requirements for root length and number of lateral roots >5cm when annual seedlings emerge from the nursery; --- Added the quality grade requirements for annual cutting seedlings out of the nursery: This document is under the jurisdiction of the National Standardization Technical Committee of Forest Tree Seeds (SAC/TC115): This document was drafted by: Nanjing Forestry University, Shandong Forest Tree Seedling Management Station, and Henan Province Forest Tree Seedling Management Station: The main drafters of this document: Zhang Gexiang, Li Shuxian, Zhang Xiangxiang, Ding Yanfen, Hu Jing, Wei Wei: The previous versions of the standards replaced by this document are as follows: ---LY/T 2946-2018: Technical regulations for tassel tree seedling raising1 ScopeThis document specifies the nursery preparation, sowing, cutting, Technical requirements for seedlings out of nursery, packaging and transportation, filing, etc: This document applies to the cultivation of tassel tree seedlings and cuttings:2 Normative referencesThe contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document: GB/6000 Quality classification of seedlings of major afforestation tree species GB/T 6001 Technical Regulations for Raising Seedlings LY/T 2289 Forest tree seedling production and management files LY/T 2290 Forest Tree Seedling Label3 Terms and DefinitionsThere are no terms and definitions that need to be defined in this document:4 Field preparation4:1 Nursery selection It is advisable to choose slightly acidic to neutral sandy loam or loam with gentle terrain, fertile and loose soil, convenient transportation and good irrigation and drainage conditions: nursery: 4:2 Soil disinfection and application of basal fertilizers 20d~30d before sowing, plough the soil to a depth of 30cm~40cm, remove soil debris, rake and level; combine with soil preparation and apply 30% ferrous sulfate For disinfection, 2kg/667m2~3kg/667m2 is appropriate, and at the same time, 50000kg/hm2~60000kg/hm2 of decomposed farmyard manure is applied as base fertilizer: 4:3 Making beds (ridges) A raised bed can be used to raise seedlings, the bed width is 100cm~120cm, the bed height is 25cm~30cm, and the walkway width is 35cm~40cm: It can also be planted in high ridges in the field: The ridge spacing, ridge height and ridge surface width are 30cm, 20cm and 50cm respectively, and the row spacing on the ridge surface is 30cm: The groove is 4cm~5cm deep: ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of LY/T 2946-2021_English be delivered?Answer: Upon your order, we will start to translate LY/T 2946-2021_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version LY/T 2946-2021?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version LY/T 2946-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
