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  • 标题:Excel-Based Computational Template for Irrigation Scheduling Using Dual Crop Coefficients
  • 本地全文:下载
  • 作者:Younggu Her ; Kelly T. Morgan ; Qingren Wang
  • 期刊名称:Journal of Extension
  • 印刷版ISSN:0022-0140
  • 电子版ISSN:1077-5315
  • 出版年度:2019
  • 卷号:57
  • 期号:1
  • 页码:1-5
  • 出版社:Journal of Extension, Inc.
  • 摘要:We developed an Excel-based computational template Extension educators can use to assist clientele with scheduling irrigation for efficient use of water. With the template, the user applies the dual crop coefficient method to calculate evaporation and transpiration rates separately, with the result being more accurate soil water tracking as compared to what occurs when a single crop coefficient is used. Crop water needs can be conveniently calculated on the basis of soil characteristics, crop growth stages, and weather information. Application examples demonstrate that the amount and frequency of irrigation should be adjusted according to soil texture. The template and application examples are available to Extension professionals as electronic supplementary material.
  • 关键词:irrigation scheduling ; dual crop coefficients ; FAO-56 method ; Excel template ; Penman-Monteith equation
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