%0 Journal Article
%T Desorption characteristics of inorganic nitrogen in vegetable garden soil and their effects on soil NO3- N loss potential<br>菜园土壤无机氮解吸特性对硝态氮流失潜能的影响
%A YAN Ming-juan
%A ZHANG Ming-qing
%A CHEN Zi-chong
%A LI Juan
%A LIN Qiong
%A WU Qi-tang
%A XIONG De-zhong
%A <br>颜明娟
%A 章明清
%A 陈子聪
%A 李娟
%A 林琼
%A 吴启堂
%A 熊德忠
%J 应用生态学报
%D 2007
%I 
%X With pot experiment and soil nitrogen desorption model, this paper studied the characteristics of nitrogen desorption in vegetable garden soil, and their effects on the NO3- -N concentration of soil leachate. The results showed that soil leachate NO3- -N concentration had a non-linear relationship with the parameters Q, Cli and C1/lamda of soil nitrogen, but the relationship became linear when these eigenvalues were relatively low. A conception of hi-curve cross point was put forward to assess the soil NO3- -N loss potential. When the eigenvalues were higher than the hi-curve cross point X0, the NO3- -N concentration in soil leachate would be increased rapidly in non-linear form, while on the contrary, the increase would be maintained at a lower level.
%K soil
%K NO3^- -N
%K loss potential
%K bi-curve cross point<br>土壤
%K 硝态氮
%K 流失潜能
%K 双速率转折点
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=A59697A2C5F53551&yid=A732AF04DDA03BB3&vid=13553B2D12F347E8&iid=CA4FD0336C81A37A&sid=BB0EA31DB1B01173&eid=8C83C265AD318E34&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=0&reference_num=15