期刊名称：Iranica Journal of Energy and Environment (IJEE)
印刷版ISSN：2079-2115
电子版ISSN：2079-2123
出版年度：2011
期号：3137
页码：313-319
出版社：Noshirvani University of TEchnology
摘要：In order to study the effects of nitrogen and available soil water levels on growth and yield components of sunflower (cv. Embrapa 122 / V-2000), an experiment was carried out from November 2009 to October 2010 in the Agricultural Engineering Department of the Federal University of Campina Grande, Campina Grande, Paraiba, Brazil. The treatments were arranged as a completely randomized design, in a 4 × 4 factorial experiment (four nitrogen levels and four available soil water levels), with three replications, totaling 48 experimental units. The nitrogen (N) levels in kg ha-1 were: 0; 60; 80 and 100 added as urea; the available soil water (AW) levels were 55; 70; 85 and 100 %. In conclusion, this study has shown that the application of nitrogen fertilizer levels and available soil water levels led to significant increase in growth traits and production traits except for the dry weight of 1000 seeds.
