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US$199.00 · In stock Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 34967-2017: Grade of rice cold damage in northern China Status: Valid
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Grade of rice cold damage in northern China
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GB/T 34967-2017
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Basic data | Standard ID | GB/T 34967-2017 (GB/T34967-2017) | | Description (Translated English) | Grade of rice cold damage in northern China | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B18 | | Classification of International Standard | 07.060 | | Word Count Estimation | 10,146 | | Date of Issue | 2017-11-01 | | Date of Implementation | 2017-11-01 | | 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 34967-2017: Grade of rice cold damage in northern China---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.
Grade of rice cold damage in northern China
ICS 07.060
B18
National Standards of People's Republic of China
North rice chilling injury level
Posted.2017-11-01
2017-11-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Directory
Foreword Ⅲ
1 Scope 1
2 Terms and definitions 1
3 chilling injury classification 2
4 delayed-type low-temperature chilly weather meteorological indicators 2
5 hurricane level chilly weather meteorological indicators 3
Appendix A (informative) north of the main growth stages of rice required ≥ 10 ℃ active accumulated temperature 4
Reference 5
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 was drafted unit. Meteorological Station of Jilin Province, Meteorological Institute of Ningxia Hui Autonomous Region, Institute of Meteorology, Jilin Province, Inner Mongolia
Ecology and Agrometeorology Center, Heilongjiang Institute of Meteorology, Shenyang Institute of Atmospheric Environment, China Meteorological Administration.
The main drafters of this standard. Ma Shuqing, Malvin, hit Zhu Xiang, Wang Qi, Li Xiufen, Chen Suhua, Ji Lingling, Zhang Shujie, Liu Jing, Jiang Lixia,
Lin Peas.
North rice chilling injury level
1 Scope
This standard specifies the level of north China rice cold damage and weather indicators.
This standard applies to China's northern season of japonica rice (mainly including the northeast, northwestern North China and northern North China) rice low
Temperature monitoring, forecasting and assessment work.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
May-September temperature anomaliesoftemperaturein5-9month
May-September monthly average temperature of the sum of the average value.
2.2
≥10 ℃ active difference between the difference ofaccumulatedtemperatureabove10 ℃
The difference between the active accumulated temperature of ≥10 ℃ and the accumulated accumulated temperature of ≥10 ℃ during the same period of rice growth in a certain stage of rice growth.
2.3
Delayed hypothermic cold delayed rice delayedgrowth-typericecolddamage
Due to a long time low temperature, resulting in delayed rice growth, effective tillering, grain weight decreased, or lead to rice can not be normal maturity, yield reduction
Agricultural natural disasters.
2.4
Rice-type cryopreservation cold-typericecolddamage
Rice booting and flowering encountered short-term strong cold weather process, inhibit rice reproductive growth activities, resulting in obstruction of pollen development,
Poor fertilization, decreased seed setting, and agricultural natural disasters that cause reduced production.
Note. The chilling injury that occurs during the booting and flowering stages in rice is called the chilling injury at the booting stage and the flowering stage.
2.5
Late maturity areaoflate-maturingvariety
Suitable for the cultivation of late rice varieties in the region, the frost-free period of 141d or more, 80% guarantee rate ≥ 10 ℃ active accumulated temperature 2850 ℃ · d
the above.
2.6
The maturity areaofmiddle-maturingvariety
Suitable for planting paddy region (including late-maturing) varieties of the region, the frost-free period of 126d ~ 140d, 80% guarantee rate ≥ 10 ℃ activity
The temperature is 2400 ℃ · d ~ 2850 ℃ · d.
2.7
Early maturity areaofearly-maturingvariety
Suitable areas for planting precocious rice varieties, the frost-free period of 110d ~ 125d, 80% guarantee rate of ≥ 10 ℃ active accumulated temperature
1800 ℃ · d ~ 2400 ℃ · d.
2.8
Safeevenheadingstage safe and full heading
The threshold of universal heading to ensure complete maturity of rice prior to early frost will vary with the variety and region of the variety.
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