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GB/T 25241.1-2010 English PDF

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GB/T 25241.1-2010: Rules for tobacco intensive seedling production -- Part 1: Seedling with float system
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Basic data

Standard ID GB/T 25241.1-2010 (GB/T25241.1-2010)
Description (Translated English) Rules for tobacco intensive seedling production -- Part 1: Seedling with float system
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard X87
Classification of International Standard 65.160
Word Count Estimation 8,851
Date of Issue 2010-09-26
Date of Implementation 2011-01-01
Quoted Standard GB 4455; GB/T 18621; GB/T 18622; GB/T 20202; GB/T 25240; JB/T 10286; JB/T 10288; YC/T 310
Regulation (derived from) National Standard Approval Announcement 2010 No.6 (Total No.161)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the requirements tobacco float seedling nursery and nursery techniques. This section adapted to tobacco float seedling production.

GB/T 25241.1-2010: Rules for tobacco intensive seedling production -- Part 1: Seedling with float system


---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.
Rules for tobacco intensive seedling production Part 1. Seedling with float system ICS 65.160 X87 National Standards of People's Republic of China Intensive breeding techniques tobacco regulations Part 1. floating nursery Part 1. Seedlingwithfloatsystem Issued on. 2010-09-26 2011-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 25241 "Tobacco intensive breeding technical regulations" is divided into three parts. --- Part 1. floating nursery; --- Part 2. Seedlings; --- Part 3. Sand nurturing seedlings. This section GB/T 25241 Part 1. This part by the State Tobacco Monopoly Bureau. This part of the National Technical Committee of Standardization Technical Committee on Tobacco Agriculture (SAC/TC144/SC2) centralized. This section drafted by. China Tobacco Corporation, Henan Agricultural University, Yunnan Tobacco Institute of Agricultural Sciences. The main drafters of this section. Liu Jianli, when the east, Liu Guoshun, Wang Gang, Yang Yuhong. Intensive breeding techniques tobacco regulations Part 1. floating nursery

1 Scope

This section GB/T 25241 specifies the requirements for tobacco floating nursery seedling and breeding techniques. This section adapted to tobacco float seedling production.

2 Normative references

The following documents contain provisions which, through reference GB/T 25241 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB 4455 agricultural polyethylene blown films GB/T 18621 Greenhouse ventilation and cooling design specifications GB/T 18622 Greenhouse Structural Design Load GB/T 20202 Agriculture with ethylene - vinyl acetate copolymer (EVA) blown films GB/T 25240 Tobacco Pelleted Seed JB/T 10286 solar greenhouse structure JB/T 10288 Greenhouse structure YC/T 310 Tobacco Floating System Substrates

3 Terms and Definitions

The following terms and definitions apply to this part of the GB/T 25241 of. 3.1 Floating nursery seedlingwithfloatsystem In a greenhouse or plastic shed molded polystyrene trays use as a carrier filled with artificial prepared in a suitable matrix, will float trays In the nursery pond water containing nutrients, complete tobacco seed germination and seedling nursery way process. 3.2 Seedling age seedlingage From seedling to the number of days the seedling.

4 seedling requirements

Seedling age 55d ~ 75d, the number of leaves per plant 6 - 8, stem height 10cm ~ 15cm, girth 1.8cm ~ 2.2cm. Tobacco robust disease-free Pests, being green leaves, root, stem, good flexibility, uniform neat Tobacco group.

5 nursery site selection and the surrounding facilities

5.1 seedling shed site 5.1.1 build studio site selection, construction area should be based on kinds of tobacco seedlings shed. 5.1.2 seedling shed site should be sheltered sunny microclimate conducive to insulation, flat, close to clean water (well water, tap water), easily accessible place.

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