GB/T 32136-2015 English PDF

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GB/T 32136-2015: Grade of agricultural drought
Status: Valid

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GB/T 32136-2015	399	Add to Cart	4 days	Grade of agricultural drought	Valid

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Basic data

Standard ID: GB/T 32136-2015 (GB/T32136-2015)
Description (Translated English): Grade of agricultural drought
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B18
Classification of International Standard: 07.060
Word Count Estimation: 19,154
Date of Issue: 2015-10-13
Date of Implementation: 2016-05-01
Quoted Standard: GB/T 20481
Regulation (derived from): National Standard Announcement 2015 No.33
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 classification and agricultural drought index calculation method. This Standard applies to agricultural drought monitoring, early warning and assessment.

GB/T 32136-2015: Grade of agricultural drought

---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.
(Agricultural Drought Level) ICS 07.060 B18 National Standards of People's Republic of China Agricultural Drought Level Issued on. 2015-10-13 2016-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Preface Ⅰ Introduction Ⅱ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 classification 2 5 Level Indicators 2 5.1 crop water deficit anomaly index 2 5.2 Soil humidity index 2 5.3 Farmland Crops Drought Index Form 2 5.4 Principle 3 6 Index Calculation Method and Scope 3 6.1 crop water deficit anomaly Index calculation methods and scope 3 6.2 Calculation of soil index of relative humidity and scope 4 Principle 6.3 morphological crop Farmland Drought Index and Scope 5 Appendix A (informative) classification standard of soil texture 6 Calculation Appendix B (normative) crop coefficient (Kc) values \u200b\u200b7 Annex C (informative) parts of the country crop coefficient (Kc) Reference 11 Annex D (informative) critical period of water requirement of main crops 13 Appendix E (normative) Calculation method of soil moisture and field capacity 14 References 15

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by the China Meteorological Administration. This standard by the National Standardization Technical Committee on Agricultural Meteorology (SAC/TC539) centralized. This standard was drafted. National Meteorological Center, Chinese Academy of Agricultural Sciences and Agricultural Resources Institute of Agricultural Division, Shenyang, China Meteorological Administration Gas Environmental Research Institute. The main drafters of this standard. thick Lu Quan Zhang Yushu, LI Maosong, Wang Jianlin, Zhang Shujie, Louxiu Rong, Zhang Yanhong, Wu new.

Introduction

Drought affecting the agricultural production of the most serious natural disasters, seasonal, regional, persistent and other features. Agricultural drought can A direct result of large-scale crop failures, serious and even lead to total destruction of national food security and sustainable agricultural development poses a serious threat. In order to strengthen the agricultural drought relief work, to improve the relevance, scientific, timeliness standard is formulated and drought mitigation, designed to regulate the country General, agricultural drought has spatial and temporal comparability of classification. Agricultural Drought Level

1 Scope

This standard specifies the classification and agricultural drought index calculation method. This standard applies to agricultural drought monitoring, early warning and assessment.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 20481 meteorological drought level

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Crop water requirement cropwaterrequirement Under normal crop growth and development, farm and crop evaporation and transpiration of. 3.2 The critical period of crop water requirement criticalperiodofcropwaterrequirement Crop Water Critical Period How much water during the reaction of the most sensitive period of crop growth and yield. During this period if the water supply insufficient or too More, it will seriously impede the normal growth and lead to significant cuts. 3.3 Crop coefficient cropcoefficient Under the condition of an adequate supply of soil moisture, crop evapotranspiration and crop reference evapotranspiration ratio. 3.4 Crop Water Stress Index cropwaterdeficitindex Outside water can not meet the water requirement of the crop accounts for part of the crop water requirement ratio as a percentage (%) said. 3.5 Crop water deficit anomaly index cropwaterdeficitabnormalindex Normalized difference Crop Water Deficit Index and average percentage (%) said. 3.6 Soil relative humidity index soilrelativemoistureindex The average relative humidity of soil layer root crops and crop product development period adjustment coefficient in percent (%) said. 3.7 Farmland Crops Drought morphological indexes croplandstateandcropsmorphologicalindexunderdroughtsituation According to farmland and crops affected by drought index external morphological characteristics under the effects of drought determined. 3.8 Agricultural drought agriculturaldrought In the crop growing season, due to insufficient water supply led to field water supply and demand imbalance and hinder crop normal growth and development of the phenomenon. ......

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