LY/T 2418-2015 English PDF

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LY/T 2418-2015: Sampling scheme of tree seedlings
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Basic data

Standard ID: LY/T 2418-2015 (LY/T2418-2015)
Description (Translated English): Sampling scheme of tree seedlings
Sector / Industry: Forestry Industry Standard (Recommended)
Classification of Chinese Standard: B61
Classification of International Standard: 65.020.40
Word Count Estimation: 6,615
Date of Issue: 2015-01-27
Date of Implementation: 2015-05-01
Quoted Standard: GB 6000; GB/T 6001-1985
Regulation (derived from): State Forestry Administration Announcement 2015 No. 6: Industry Standard Filing Announcement 2015 No. 2 (Total number 182)
Issuing agency(ies): State Forestry Administration
Summary: This Standard specifies the afforestation seedling nursery trees, seedlings and has already lifter grade afforestation seedling sampling methods. This Standard applies to afforestation seedling trees were bare rooted sampling quality detection. Seedlings sampling container seedlings should refer to this standard.

LY/T 2418-2015: Sampling scheme of tree seedlings

---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.
Sampling scheme of tree seedlings ICS 65.020.40 B61 People's Republic of China Forestry Industry Standard Seedling sampling method Released on.2015-01-27 2015-05-01 implementation State Forestry Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the State Forestry Administration. This standard is under the jurisdiction of the National Forest Seed Standardization Technical Committee (SAC/TC115). This standard is drafted by. Southern Forest Seed Testing Center of the State Forestry Administration. Participated in the drafting of this standard. Nanjing Forestry University, Fujian Forest Tree Seedling Station, Yunnan Forest Tree Seedling Station. The main drafters of this standard. Yu Fangyuan, Tong Chunfa, Fang Wei, Li Jiping. Seedling sampling method

1 Scope

This standard stipulates the sampling methods for afforestation tree seedlings, seedlings, and seedlings. This standard is applicable to the sampling of seedlings in the quality inspection of bare rooted seedlings of afforestation tree species. The sampling method of seedlings of container seedlings should refer to this standard.

2 Reference standard

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB 6000 Main afforestation tree seedling quality grading GB/T 6001-1985 technical regulations for nursery

3 Terms and definitions

The terms and definitions defined in GB 6000 apply to this document.

4 sampling of alfalfa seedlings

4.1 Determining the sampling plan According to the provisions of GB 6000, the seedlings are divided. The same seedling batch should be determined according to Table 1. Table 1 Table of the limit quality control type seedling count sampling test plan Seedling batch Sample seedling volume Allow maximum value of unqualified seedlings (A) PA=5% PA=10% PA=15% PA=20% PA=25% PA=30% PA=35% 500~1000 50 2 4 6 9 11 13 16 1001~10000 100 6 10 15 19 24 29 34 10001~50000 250 19 30 42 54 66 78 90 50001~100000 350 28 44 60 77 94 111 128 100001~500000 500 41 65 89 113 137 161 186 500000 or more 750 64 100 136 172 209 246 283 Note 1. The determination of the amount of seedlings is carried out in accordance with the provisions of GB 6000. Note 2. PA is the percentage of unqualified seedlings allowed by GB 6000. Note 3. The maximum value of the unqualified sample seedlings allowed in the table is calculated according to the formula A≈nP1-1.282[nP1(1-P1)]1/2. Where n is the amount of seedlings, P1 is the pole Limited mass, calculated as P1=PA 0.05. ......

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