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GB/T 34813-2017 English PDF

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GB/T 34813-2017: Meteorological grades of water-saving irrigation -- Soybean
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Basic data

Standard ID GB/T 34813-2017 (GB/T34813-2017)
Description (Translated English) Meteorological grades of water-saving irrigation -- Soybean
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard B18
Classification of International Standard 07.060
Word Count Estimation 11,135
Date of Issue 2017-11-01
Date of Implementation 2017-11-01
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 34813-2017: Meteorological grades of water-saving irrigation -- Soybean

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Meteorological grades of water-saving irrigation-Soybean ICS 07.060 B18 National Standards of People's Republic of China Crop water-saving irrigation weather grade soybean 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 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) Soybean 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 have Hao, Mao Fei, Wang Li, Zhang Lei, Yu Caixia, Wang Chunyan.

Introduction

In order to provide timely and targeted soybean water-saving irrigation services, and to effectively alleviate the shortage of agricultural water resources and improve the efficiency of farmland water use Rate, to achieve crop yield-saving crops, based on different stages of soybean water demand and its water deficit rate, combined with the forecast of future precipitation levels, preparation This standard. Crop water-saving irrigation weather grade soybean

1 Scope

This standard specifies the classification of soybean water-saving irrigation meteorological levels and irrigation quota. This standard applies to forecasting and service of soybean 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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