文章基本信息

标题：Urea Deep Placement in Rice as an Option for Increasing Nitrogen Use Efficiency
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作者：Amina Khatun ; Hasina Sultana ; M. A. U. Zaman 等
期刊名称：Open Access Library Journal
印刷版ISSN：2333-9705
电子版ISSN：2333-9721
出版年度：2015
卷号：2
期号：4
页码：1-11
DOI：10.4236/oalib.1101480
语种：English
出版社：Scientific Research Pub
摘要：Prilled urea applicator is a nitrogen saving technology. Aiming to find out the efficiency of BRRI prilled urea applicator, a field experiment was conducted during boro season of 2013-2014 at the Bangladesh Rice Research Institute (BRRI) experimental farm, Gazipur and at farmer’s field of Dhirasshram village under Gazipur Sadar Upazilla, Gazipur, Bangladesh. Four treatments viz. 1) hand broadcasting of prilled urea as per BRRI recommendation (T1), 2) prilled urea application by applicator (70% of the BRRI recommended dose) (T2), 3) hand broadcasting of prilled urea (70% of the BRRI recommended dose) (T3) and 4) N-control (T4) were evaluated in the study. The T2 treatment gave the highest grain yield of 6.96 t·ha-1 and 7.20 t·ha-1 at BRRI farm and Dhirasshram village, respectively, followed by those of T1 treatment. The highest agronomic use efficiency was obtained from T2 treatment in both the locations. Similar scenario for apparent recovery efficiency, utilization efficiency and partial factor productivity was also observed in T2 treatment. Moreover, about thirty percent prilled urea was saved due to deep placement of urea by applicator in boro season.
关键词：ApplicatorN FertilizerRice (Oryza sativa L.)N Use Efficiency