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US$219.00 · In stock Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 34811-2017: Meteorological grades of water-saving irrigation -- Wheat Status: Valid
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Meteorological grades of water-saving irrigation -- Wheat
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GB/T 34811-2017
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Basic data | Standard ID | GB/T 34811-2017 (GB/T34811-2017) | | Description (Translated English) | Meteorological grades of water-saving irrigation -- Wheat | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B18 | | Classification of International Standard | 07.060 | | Word Count Estimation | 11,112 | | Date of Issue | 2017-11-01 | | Date of Implementation | 2018-05-01 | | Regulation (derived from) | National Standard Announcement 2017 No. 29 | | 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 |
GB/T 34811-2017: Meteorological grades of water-saving irrigation -- Wheat---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.
Meteorological grades of water-saving irrigation-Wheat
ICS 07.060
B18
National Standards of People's Republic of China
Crop water-saving irrigation meteorological grade wheat
Posted.2017-11-01
2018-05-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Directory
Preface Ⅰ
Introduction Ⅱ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 levels and irrigation quota 2
Appendix A (Normative) Wheat moisture deficit rate calculation 3
References 7
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by China Meteorological Administration.
This standard by the National Agricultural Meteorology Standardization Technical Committee (SAC/TC539) centralized.
This standard drafting unit. Chinese Academy of Meteorological Sciences, Chinese Academy of Agricultural Sciences Institute of Agricultural Resources and Regional Planning, China Water conservancy
Electric Science Institute.
The main drafters of this standard.Huo Zhiguo, Xiao Jingjing, Li Maosong, Li Jusheng, Russia has Hao, Mao Fei, Wang Li, Zhang Lei, Yu Caixia, Wang Chunyan,
Zhao Wei Xia.
Introduction
To provide timely and targeted wheat water-saving irrigation services, as well as to effectively alleviate the shortage of agricultural water resources and improve the efficiency of farmland water use efficiency
Rate, to achieve crop water-saving and yield increase, wheat water demand at different stages of development and its water deficit rate, combined with the forecast of future precipitation levels, preparation
This standard.
Crop water-saving irrigation meteorological grade wheat
1 Scope
This standard specifies the classification of wheat water-saving irrigation meteorological levels and irrigation quota.
This standard applies to forecast and service of wheat water-saving irrigation.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
Wheat drought disaster rating
Technical guideline for determination of irrigation water utilization rate
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Crop water deficit waterdeficitincrop
Crop water absorption can not meet the needs of transpiration, the body of water shortage, hindering the phenomenon of normal physiological activity.
3.2
Crop water deficit watershortageincrop
When the crop water deficit occurs, within a certain period of time the depth of the crop root depth of the soil layer of water and crop water demand difference
Amount, expressed in absolute terms.
Note. The unit is millimeter (mm).
3.3
Crop water deficit rate waterdeficiencyratesincrop
Within a certain period of time, the crop water deficit accounts for the ratio of crop water requirements.
Note. Expressed as a percentage.
3.4
Crop water-saving irrigation water-savingirrigationforcrop
According to different stages of crop water demand and its water deficit situation, to maximize the amount of irrigation water per unit for
Appropriate amount of output and output value, appropriate irrigation.
3.5
Crop water-saving irrigation meteorological grade of water-savingirrigationforcrop
Irrigation rates based on current crop water deficit rates and forecast for precipitation levels for the next 3 days.
3.6
Irrigation quotas irrigationquota
The amount of water per unit area or water depth at a given irrigation.
Note. The unit is cubic meter per hectare (m3/hm2) or millimeter (mm).
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