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GB/T 32752-2016: Meteorological grade of agricultural waterlogging
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Meteorological grade of agricultural waterlogging
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GB/T 32752-2016
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Basic data | Standard ID | GB/T 32752-2016 (GB/T32752-2016) | | Description (Translated English) | Meteorological grade of agricultural waterlogging | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A47 | | Classification of International Standard | 07.060 | | Word Count Estimation | 6,681 | | Date of Issue | 2016-08-29 | | Date of Implementation | 2017-03-01 | | Regulation (derived from) | National Standard Announcement 2016 No.14 | | 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 level of farmland waterlogging. This standard applies to farmland waterlogging weather forecast, early warning services and related research. | GB/T 32752-2016: Meteorological grade of agricultural waterlogging---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 grade of agricultural waterlogging
ICS 07.060
A47
National Standards of People's Republic of China
Farmland waterlogging weather rating
2016-08-29 released
2017-03-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by the China Meteorological Administration.
This standard is nationalized by the National Committee for Standardization of Agricultural Meteorology (SAC/TC539).
The drafting of this standard. National Meteorological Center, China Meteorological Administration Public Weather Service Center.
The main drafters of this standard. Xue Jianjun, Zhao Linna, Qi Dan, Lv Houquan, Li Yu Mei, Xu Jing.
Introduction
Waterlogging is one of the main agricultural weather disasters in China, often resulting in winter wheat, corn, rape, cotton and other crops cut or quality. Agriculture
The occurrence of waterlogging is due to excessive precipitation, farmland soil moisture in a wet or saturated state, soil pores filled with water, lack of air, resulting in
Plant roots environmental conditions deteriorate, growth and development, resulting in crop reduction or quality reduction.
In order to standardize and strengthen the farmland waterlogging meteorological level forecasting and alarm service business, it provides scientific basis for agricultural disaster prevention and mitigation.
standard.
Farmland waterlogging weather rating
1 Scope
This standard specifies the level of waterlogging in the farmland.
This standard applies to farmland waterlogging weather forecast, early warning services and related research.
2 terms and definitions
The following terms and definitions apply to this document.
2.1
Farmland waterlogging
Soil water content in the farmland is too wet or saturated, the soil is filled with large pores, lack of air, resulting in deterioration of the environmental conditions of the plant roots.
An agricultural weather disaster that leads to crop reduction or quality reduction.
2.2
Soil field water holding capacity
The soil can keep the capillary water with the maximum water content.
Note. Percentage (%) of moisture quality in the same volume or in the same quality soil.
[GB/T 20481-2006, definition 2.9]
2.3
Soil relative humidity relativesoilmoisture
The ratio of actual soil water content to soil water holding capacity.
Note. expressed as a percentage (%).
[GB/T 20481-2006, definition 2.7]
2.4
Surface runoff depth surfacerunoffdepth
Precipitation intensity exceeds the infiltration strength and surface storage volume when the flow to the low, the formation of surface water. The amount of water in this process averages to the unit
Depth on the area.
Note. The unit is in millimeters (mm).
3 abbreviations
The following abbreviations apply to this document.
PI. precipitation index (precipitationindex)
RSM0-50. 0cm ~ 50cm soil relative humidity (relativesoilmoisturefrom0cmto50cmdepth)
SRD. surface runoff depth (surfacerunoffdepth)
4 waterlogging waterlogging weather classification
4.1 Principles of division
According to the soil relative humidity, surface runoff depth, rainfall index three factors, a comprehensive analysis of farmland waterlogging occurrence of the possibility of size, indeed
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