کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5758296 | 1622889 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impact of irrigation and nitrogen fertilizer rate on soil water trends and maize evapotranspiration during the vegetative and reproductive periods
ترجمه فارسی عنوان
تأثیر میزان آبیاری و کود نیتروژن بر روند آب های خاک و تبخیر و تعرق ذرت در دوره های رویشی و باروری
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کلمات کلیدی
استفاده از محصول کشاورزی، عملکرد دانه، مرحله رشد، آبیاری محدود کمبود مواد مغذی، آبهای خاک،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
چکیده انگلیسی
Field research was conducted in 2011 and 2012 at the University of Nebraska-Lincoln South Central Agricultural Laboratory located near Clay Center, NE to evaluate maize actual evapotranspiration (ETa) during the vegetative and reproductive growth periods for 0, 84, 140, 196, and 252 kg haâ1 nitrogen (N) fertilizer treatments under full irrigation (FIT), limited irrigation (75% of FIT), and rainfed settings. Daily ETa values were greatest during the early reproductive period (silking to blister growth stages) with average values of 3.62, 5.18, and 5.91 mm dâ1 in 2011 and 4.37, 5.92, and 6.12 mm dâ1 in 2012 for rainfed, 75% FIT, and FIT, respectively. Maize ETa during the vegetative period was not significantly impacted by N fertilizer rate in 2011 (P0.05 = 0.2357) or 2012 (P0.05 = 0.6341). Whereas, reproductive period ETa for FIT and 75% FIT for the pooled years significantly increased with N fertilizer rate with slopes of 0.20 and 0.17, respectively. The rainfed regression slopes were not statistically different from zero in 2012 (P0.05 = 0.1467) or pooled years (P0.05 = 0.0505). The increase in reproductive ETa with N fertilizer and irrigation resulted in a positive grain yield response with slopes of 0.021, 0.048, and 0.104 Mg haâ1 mmâ1 for the rainfed, 75% FIT, and FIT settings, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agricultural Water Management - Volume 191, September 2017, Pages 77-84
Journal: Agricultural Water Management - Volume 191, September 2017, Pages 77-84
نویسندگان
D.R. Rudnick, S. Irmak, K. Djaman, V. Sharma,