%0 Journal Article
%T Characteristics of N loss and its environmental effects in the dryland of Huang-Huai-Hai plain<br>黄淮海平原旱田氮素损失特征及其环境影响研究
%A CHEN Jian
%A SONG Chun -Mei
%A LIU Yun-Hui
%A <br>陈 健
%A 宋春梅
%A 刘云慧
%J 中国生态农业学报
%D 2006
%I 
%X Based on the N balance parameters and statistical data,the characteristics of N loss and its environmental effects for the dominant crops of winter wheat and summer maize in Huang-Huai-Hai plain were studied.The results indicated that with the increase of N fertilizer application from 1992 to 1998,the total N loss,ammonia volatilization loss,nitrificattion-denitrification loss,leaching and runoff per unit area were gradually increased.The residual rate,loss rate and utilization efficiency were different for N fertilizers and crops;the loss of N fertilizers was much higher in the field of summer maize than that in the field of winter wheat.At last,the environmental effect of N loss and possible countermeasures were discussed.
%K Winter wheat
%K Summer maize
%K N fertilizer
%K Loss characteristic
%K Environmental effect<br>冬小麦
%K 夏玉米
%K N肥
%K 损失特征
%K 环境影响
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=75BCCFCFCCE91060&yid=37904DC365DD7266&vid=F3583C8E78166B9E&iid=0B39A22176CE99FB&sid=A4FA325EA800C820&eid=331211A5F5616413&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=4&reference_num=26