Evaluation of crop coefficients, water productivity, and water balance components for wine grapes irrigated at different deficit levels by a sub-surface drip

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• 作者：V. Phogat^a ; ^{vinod.phogat@sa.gov.au} ; M.A. Skewes^a ; M.G. McCarthy^a ; J.W. Cox^a ; ^b ; J. &Scaron ; imůnek^c ; P.R. Petrie^a ; ^d
• 关键词：Wine grapes ; Sub-surface drip ; HYDRUS-2D ; Evapotranspiration ; Crop coefficients ; Water productivity
• 刊名：Agricultural Water Management
• 出版年：2017
• 出版时间：31 January 2017
• 年：2017
• 卷：180
• 期：part_PA
• 页码：22-34
• 全文大小：2734 K
• 卷排序：180

文摘

Water balance components for variably irrigated wine grape were estimated. Model simulated seasonal ETC varied from 239 to 382 mm for different treatments. The mean value of actual crop coefficient (Kcact) over the two seasons was 0.27. Monthly Ke values ranged from 0.1 to 0.32 with a seasonal mean of 0.18. Productivity for ET (WPETC) varied from 5.7–6.2 kg/m3 across irrigation applications.