کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6363776 | 1622924 | 2015 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Inflow rate and border irrigation performance
ترجمه فارسی عنوان
نرخ تورم و عملکرد آبیاری مرزی
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کلمات کلیدی
آبیاری مرزی، نرخ تورم، عملکرد آبیاری،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
چکیده انگلیسی
Modernisation of regional water delivery infrastructure can provide irrigators using border irrigation systems with the option to apply water to border irrigation bays at much higher inflow rates. Substantial improvements in irrigation performance have been claimed by proponents of higher bay inflow rates, leading to large investments in farm infrastructure. In this work, measurements made on bays irrigated at different inflow rates on a range of soil types, crops and irrigation deficits did not demonstrate substantial differences in irrigation performance. Assessments made using a surface irrigation model fitted to the measured irrigations also showed limited differences in feasible irrigation performance related to inflow rates. Extrapolating irrigation performance over feasible inflow rates and durations revealed that equivalent performance could be achieved with inflow rates ranging from 2 to 7 L sâ1 mâ1 provided that appropriate inflow durations were adopted. An analysis involving modest variations of ±5% in inflow rate and ±5 mm in the estimate of irrigation requirement produced substantial uncertainties in irrigation performance, suggesting that attempts by irrigators to consistently achieve more precise irrigation performance targets may not be feasible. Improved understanding of the role of uncertainty in border irrigation systems, models and measures of irrigation performance would provide a useful basis for improving border irrigations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agricultural Water Management - Volume 155, June 2015, Pages 76-86
Journal: Agricultural Water Management - Volume 155, June 2015, Pages 76-86
نویسندگان
Michael R. Morris, Amjed Hussain, Malcolm H. Gillies, Nicholas J. O'Halloran,