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LY/T 2946-2021: Technical regulations of seedling cultivation for Chionanthus retusus Lindl. et Paxt.
Status: Valid LY/T 2946: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| LY/T 2946-2021 | English | 169 |
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Technical regulations of seedling cultivation for Chionanthus retusus Lindl. et Paxt.
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LY/T 2946-2021
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| LY/T 2946-2018 | English | 399 |
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Seedling technical regulation of Chionanthus retusus
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LY/T 2946-2018
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PDF similar to LY/T 2946-2021
Basic data | Standard 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
foreword
This 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 raising
1 Scope
This 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 references
The 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 Label
3 Terms and Definitions
There are no terms and definitions that need to be defined in this document:
4 Field preparation
4:1 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:
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