International Journal of Agricultural Research1816-48972152-2553Academic Journals Inc.10.3923/ijar.2011.562.572Jun-GangYang Xin-PingChen Lin-LinCheng Zhen-LingCui Fu-SuoZhang 7201167Ammonia-volatilization loss is a common problem for the cropping fields in the North China Plain. A two-year field experiment was conducted to study nitrogen losses and the resultant wheat (Triticum aestivum L.) grain yield responses to four types of nitrogen fertilizers that were top-dressed on winter-wheat in Dongbeiwang Town, Beijing. Ammonium Bicarbonate (AC), Urea (U), Calcium Ammonium Nitrate (CAN) or Ammonium Sulphate-Nitrate (ASN) were applied at 190 kg N ha-1. A control (CK) that received no N was included. Soil nitrate (NO3-N) dynamics were measured and N balance was calculated for the period of the two winter-wheat seasons. The results showed that the apparent nitrogen losses from the AC, U, CAN or ASN treatments were 79, 42, 12, or 33 kg ha-1 in 2005 and 64, 45, -15 or -5 kg ha-1 in 2006, respectively. The grain yields from the U, CAN or ASN treatments ranged from 3932 to 5012 kg ha-1 during the two wheat seasons, much greater than those from the AC or the CK treatments. The nitrogen use efficiency for the AC, U, CAN, or ASN treatments was 43, 52, 59, or 56% in 2005 and 35, 46, 51 or 53% in 2006, respectively. Soil NO3-N accumulation mainly occurred in the 0-60 cm profile and very small amounts of NO3-N were detected in the 60-90 cm profile after harvest in the N fertilization treatments. These results suggested that in the North China Plain, which is characterized by a shortage of water resources and high soil pH, CAN is a better nitrogen fertilizer because of its lower nitrogen losses, higher nitrogen use efficiency and higher grain yield than the traditional nitrogen fertilizers, urea or ammonium bicarbonate.]]>Alemi, H., M.H. Kianmehr and A.M. Borghaee,201097480Beyrouty, C.A., L.E. Sommers and D.W. Nelson,19885211731178Bian, X.J., W.J. Wang, F.C. Yang, R.G. Li and G.X. Cai et al.,1997346066Bremner, J.M.,19961996pp: 1085-1121pp: 1085-1121Brentrup, F., J. Kusters, H. Kuhlmann and J. Lammel,200114221233Guixin, C., F. Xiaohui, Y. Zhen and Z. Zhaoliang,199884552Cai, G.X., D.L. Chen, H. Ding, A. Pacholski, X.H. Fan and Z.L. Zhu,200263187195Chen, M., J. Huang, K. Cui, L. Nie and F. Shah,20093 volatilization in four rice (Oryza sativa L.) cultivars.]]>8353360Chen, X.P.,20032003Ding, H., Y.S. Wang and W.H. Li,20042O emission from different nitrogen fertilizers applied to maize-fluvo-aquic soil system.]]>3718861891Ebid, A., U. Hideto and G. Adel,2007210301036ECETOC,19941994FAO and IFA,20013, NO and N2O from agricultural land.]]>2001Gao, Y.J., S.X. Li, S.Q. Li, X.H. Tian, C.H. Wang, X.F. Zheng and J.J. Du,200596164IFA,20062006Isherwood, K.F.,20012001Ju, X.T., X.J. Liu, G.Y. Zou, Z.H. Wang and F.S. Zhang,20023514931499Li, F., Y. Miao, F. Zhang, Z. Cui and R. Li et al.,20097319Li, G.T., B.G. Li and D.L. Chen,200165662Liu, X., X. Ju, F. Zhang, J. Pan and P. Christie,200383111124Pereira, M.G., G.S. Valladares, L.H.C. dos Anjos, V. de Melo Benites, A. Jr. Espindula and A.G. Ebeling,200663187193Reuter, D.J., D.G. Edwards and N.S. Wilhelm,19971997pp: 81-284pp: 81-284SAS Institute,1996Singh, C.M., P.K. Sharma, P. Kishor, P.K. Mishra, A.P. Singh, R. Verma and P. Raha,2011Triticum aestivum L.).]]>57682Su, F., B.X. Huang, X.Q. Ding, Z.L. Gao and X.P. Chen et al.,200638682686Taubner, H., B. Roth, R. Tippkotter,2009172161171Wagan, M.R., F.C. Oad and K.S. Nenwani,20032683687Weber, A., R. Dutser and U. Schmidhalter,20012001pp: 884-885pp: 884-885Whitehead, D.C. and N. Raistrick,199041387394Zhenbang, X., S. Xiuzhu, L. Mingying, C. Yiping, W. Xun and R. Guomin,198522223232Zhang, F.S., J.Q. Wang, W.F. Zhang, Z.L. Cui, W.Q. Ma, X.P. Chen and R.F. Jiang,200845915924Zhang, S.L., G.X. Cai, X.Z. Wang and Y.H. Xu,19922171178Yu-Ming, Z., C. De-Li, Z. Jia-Bao, R. Edis, H. Chun-Sheng and Z. An-Ning,200414533540Zhang, Y.M., C.S. Hu, J.B. Zhang, D.L. Chen and X.X. Li,200515196203Zhao, R.F., X.P. Chen, F.S. Zhang, H. Zhang, J. Schroder and V. Romheld,200698938945Zhu, A., J. Zhang, B. Zhao, Z. Cheng and L. Li,200531904912Zhu, Z.L. and D.L. Chen,200263117127Zia, M.S., M. Aslam, Rahmatullah, M. Arshad and T. Ahmed,199915133135Sommer, S.G. and C. Jensen,1994378592