农田尺度下干旱指标及应用
刘晓英1; 郝卫平1; 张健2
刊名中国农业气象
2005
卷号26期号:2页码:99-105
关键词干旱指标 农田尺度 作物水分胁迫指数(CWSI) 冠层温度 Penman-Monteith法
ISSN号1000-6362
其他题名Drought Indicators and Their Applications in Field Scale
英文摘要简要综述了农田尺度下干旱胁迫的指标表达方法,分析了各种方法的优缺点及所需基础资料的获取途径,着重介绍了干旱胁迫综合指标(CWSI)的计算原理及应用.比较结果表明,从农田水分循环系统出发建立起来的CWSI~ETa/ETp、CWSI~Ta/Tp关系,直接考虑了土壤、作物、大气的综合影响,与作物生长过程结合紧密,是考虑因素最全面、综合程度最高的一种方法.该方法不仅具有较严格的理论基础,而且计算时所需基本数据都是气象站常规的观测资料,易于获得,是田间尺度下干旱胁迫对作物产量影响评价的首选方法.; There are many kinds of drought indicators expressing drought stress in field scale. This paper briefly reviewed these indicators and their data availability, pointed out the advantages and shortcomings. The integrated drought stress indi-cator, CWSI, its calculating procedure and application in agricultural practices were mainly described. The established rela-tions of CWSI - ETa/ETp and CWSI - T/Tp based on the field water cycle is the most integrated method, which directly con-sidered the integrated effect of soil, plant, and atmosphere, and also closely connected with crop growth. It has both strict theoretical basis and good data availabilitythat can be obtained from the routine meteorological observations, and thus should become the first choice in assessing effect of drought stress on crop yield in field scale.
学科主题农业基础科学
语种中文
内容类型期刊论文
源URL[http://111.203.20.206/handle/2HMLN22E/17559]  
专题农业环境与可持续发展研究所_旱作节水研究室
作者单位1.中国农科院农业环境与可持续发展研究所旱作农业节水室, 北京, 100081
2.浙江省农村发展集团有限公司
推荐引用方式
GB/T 7714
刘晓英,郝卫平,张健. 农田尺度下干旱指标及应用[J]. 中国农业气象,2005,26(2):99-105.
APA 刘晓英,郝卫平,&张健.(2005).农田尺度下干旱指标及应用.中国农业气象,26(2),99-105.
MLA 刘晓英,et al."农田尺度下干旱指标及应用".中国农业气象 26.2(2005):99-105.
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