Path:
Home >
GB/T >
Page643 > GB/T 44971-2024
Price & Delivery
US$119.00 · In stock · Download in 9 secondsGB/T 44971-2024: Soil selenium grade
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See
step-by-step procedureStatus: Valid
| Std ID | Version | USD | Buy | Deliver [PDF] in | Title (Description) |
| GB/T 44971-2024 | English | 119 |
Add to Cart
|
3 days [Need to translate]
|
Soil selenium grade
|
Click to Preview a similar PDF
Basic data
| Standard ID | GB/T 44971-2024 (GB/T44971-2024) |
| Description (Translated English) | Soil selenium grade |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | B10 |
| Classification of International Standard | 13.080.10 |
| Word Count Estimation | 6,697 |
| Date of Issue | 2024-11-28 |
| Date of Implementation | 2025-03-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 44971-2024: Soil selenium grade
---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.
ICS 13.080.10
CCSB10
National Standard of the People's Republic of China
Soil selenium content level
Released on 2024-11-28
2025-03-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the Ministry of Agriculture and Rural Affairs of the People's Republic of China.
This document is under the jurisdiction of the National Technical Committee on Soil Quality Standardization (SAC/TC404).
This document was drafted by. Nanjing Institute of Soil Science, Chinese Academy of Sciences, Suzhou Selenium Valley Technology Co., Ltd., Anhui University of Science and Technology, Nanjing Hengbaotian
Functional Agriculture Industry Research Institute Co., Ltd., Suzhou University of Science and Technology, Jiangsu Quality and Standardization Research Institute, Jiutian Environmental Technology Nanjing Co., Ltd.
Department of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Guangxi Academy of Agricultural Sciences, Ankang City Selenium-enriched Product Research and Development
Center, Yangquan Agriculture and Rural Affairs Bureau, Hubei Institute of Geological Sciences, Jiangxi Institute of Geological Survey and Exploration, Zhejiang Institute of Geology, Ganzhou Comprehensive
Inspection and Testing Institute, Shanxi Geological Survey Institute Co., Ltd., Shenyang Geological Survey Center of China Geological Survey, Yichun Selenium Resources Development and Utilization
Center, Anhui Geological Survey Institute (Anhui Institute of Geological Sciences), Huazhong Agricultural University, Heilongjiang Black Soil Protection and Utilization Research Institute, Anhui
Selenium Valley Biotechnology Co., Ltd., Suzhou Agricultural Vocational and Technical College, National Geological Experiment and Testing Center, Hebei Provincial Institute of Geological Survey, Yichun University
Institute, Shaanxi National Selenium Valley Selenium-rich Products R&D Center Co., Ltd., Chizhou Academy of Agricultural Sciences, Shitai County Agriculture and Rural Affairs Bureau, Shitai County Market Supervision and Inspection
Institute of Laboratory Technology, Anhui Agricultural University.
The main drafters of this document are. Duan Zengqiang, Yin Xuebin, Wang Zhangmin, Liu Zhikui, Huang Ruilin, Wang Yiming, Guan Xulin, Hou Yueli, Cheng Hangxin,
Liu Yongxian, Dong Shanshan, Yue Runqing, Wang Mei, Chen Meijun, Tang Dejian, Liao Han, Xu Mingxing, Yang Zhiming, Xia Zengrun, Yang Liangzhe, Gao Yuan, Chu Xianyao,
Peng Min, Huang Chunlei, Li Mengqi, Wu Peng, Liang Shuai, Liu Ying, Li Minghui, Liang Hongxia, Tu Shuxin, Yan Jiali, Kuang Enjun, Zhang Jiuming, Feng Lixin,
Zhang Zezhou, Mao Yanjun, Liu Ying, Pang Min, Li Fei, Song Jiaping, Lu Xiaoqi, Sun Chenlu, Xia Xuli, Liu Xianbiao, Liu Siwen, Liu Jiuchen, Li Xiaofeng,
Ding Yongdian, Ji Genxue, Jiang Han, Jiang Yuxiang, Hu Run, Peng Yousheng, Chen Shiyou, Wu Chenglong, Hu Shuli, Wang Yingchun, Li Miao.
Soil selenium content level
1 Scope
This document specifies the requirements for soil selenium content classification and describes the sampling and detection methods.
This document is applicable to the classification of selenium content in agricultural land soils, and can be used as a reference for the classification of selenium content in other types of soils.
2 Normative references
The contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
NY/T 1104 Determination of total selenium in soil
NY/T 1121.1 Soil testing Part 1.Collection, processing and storage of soil samples
NY/T 1121.2 Soil testing Part 2.Determination of soil pH
NY/T 3420 Determination of available selenium in soils - Hydride generation atomic fluorescence spectrometry
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Total selenium in soil
The sum of the selenium content in all forms of selenium in soil.
3.2
Selenium in the soil that can be absorbed and utilized by crops.
Note. Including but not limited to water-soluble and exchangeable selenate ions, selenite ions, selenium-containing organic small molecules and nano-selenium.
4 Classification of soil selenium content
The classification of soil selenium content should comply with the requirements of Table 1.
Table 1 Classification of soil selenium content
Soil Selenium Level pH Value
Total selenium content in soil (x)a
mg/kg
Available selenium content in soil (y)a
mg/kg
illustrate
High Selenium - x >3.0 y >0.50
Selenium in edible agricultural products produced
The content may be too high
Selenium-rich
pH≤5.5 0.40< x≤3.0
5.5< pH≤7.5 0.35< x≤3.0
pH >7.5 0.30< x≤3.0
0.05< y≤0.50
Producing selenium-rich edible agricultural products
Product potential
...
