%0 Journal Article
%T The Spatio-temporal Variations of Soil NO-3-N and Apparent Budget of Soil Nitrogen Ⅱ. Summer Maize<br>土壤硝态氮时空变异与土壤氮素表观盈亏Ⅱ.夏玉米
%A ZHOU Shun-Li
%A <br>周顺利
%J 生态学报
%D 2002
%I 
%X To minimize the loss and residual rate of soil NO - 3-N, the rate, time and method of nitrogen fertilization must be fitted to the crop needs and uptake capacity. Therefore, the spatio-temporal variations of soil NO - 3-N and apparent budget of soil N in summer maize were studied under different nitrogen fertilizer (Nf) level. A field trail was conducted at Wuqiao Research Station, Wuqiao county, Hebei province in 1998. The experiment was laid out in a split-plot design, 5 doses of nitrogen were in the...
%K summer maize
%K N-fertilizer rate
%K soil NO
%K -
%K 3-N
%K apparent budget of soil N<br>夏玉米
%K 施氮量
%K 土壤硝态氮
%K 土壤氮素的表观盈亏
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=F4A51249068CAAD2&yid=C3ACC247184A22C1&vid=BC12EA701C895178&iid=CA4FD0336C81A37A&sid=B6DA1AC076E37400&eid=8E6AB9C3EBAAE921&journal_id=1000-0933&journal_name=生态学报&referenced_num=33&reference_num=8