Global nitrogen fertilizer supply and demand outlook

来源 :中国科学C辑(英文版) | 被引量 : 0次 | 上传用户:sunlongjun
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
This paper presents a brief overview of the world nitrogen fertilizer demand, high-lights trends in the global and regional developments of production capacity and provides a medium-term perspective of the global nitrogen supply/demand balance.
其他文献
The water content distribution in the surface layer of Maoping slope has been studied by testing the water content at 31 control sites. The water content profil
目的 探讨不同恋爱、婚姻、生育阶段以及中学生人群对婚检制度的认识现状及干预策略.方法 对702名研究对象进行婚检行为的问卷调查.结果 未参加婚检的有高达80.6%(54/67)的人
Shaking table tests of a 1:10 scale arch model performed to investigate the seismic behavior and resistance of concrete filled steel tubular (CFT) arch structur
By numerically solving the unforced and inviscid nonlinear barotropic vorticity equation through the quasi-Newton method, the steady free modes are obtained, wh
Transient dynamic analysis is used to study the effect of the bidirectional interaction of friction on the response of sliding displacement of a sliding structu
2009年9月24--25日,由广西社科联、广西金融学会、田东县委、田东县人民政府联合主办的第十一期广西发展论坛在广西田东县隆重举行,会议围绕"加快农村金融改革与广西发展--以
近年来,随着城市化进程的加快,我国农村土地征收补偿中存在的法律问题和矛盾日益突出,因土地征收及补偿引起的行政案件数量不断增加.法学界对一些问题还存在不同的认识,现行
徐福与神武究竟谁有可能是首任天皇,学术界各执其词。本文从历史发展条件、社会经济条件、人类发展意识等方面进行探讨,证明徐福更有可能是日本首任天皇。 Xu Fu and Shenwu
Theoretical and experimental studies show that during hail growth the heat and mass transfers play a determinant role in growth rates and different structures.
From 0615 to 0749 UTC, 14 March 2000, a precipitation enhancement operation with AgI using an aircraft was conducted at the middle part of Shaanxi Province, Chi