%0 Journal Article
%T Effects of different wheat cultivation methods on residual nitrate nitrogen in soil in dryland<br>旱地小麦不同栽培条件对土壤硝态氮残留的影响
%A GAO Ya-Jun
%A <br>高亚军
%J 生态学报
%D 2005
%I 
%X A large amount of fertilizer N and the products of organic N mineralization accumulate in dryland soil profiles in the form of nitrate N.This nitrate has potential of leaching even in semi-arid and semi-humid area in North China,resulting in the decrease of N fertilizer utilization efficiency and an increased risk of underground water pollution.Effects of fertilization,irrigation,crop type,cropping system and soil tillage on accumulation of nitrate N in soil have been reported.However,less effort has been f...
%K plastic film mulch
%K furrow planting
%K straw mulch
%K N fertilizer rate
%K wheat density
%K soil residual nitrate N
%K dryland<br>地膜覆盖
%K 垄沟种植
%K 秸秆覆盖
%K 施氮量
%K 小麦种植密度
%K 残留硝态氮
%K 旱地
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=D4230A22D9187B63&yid=2DD7160C83D0ACED&vid=C5154311167311FE&iid=708DD6B15D2464E8&sid=3355D1464296E4D7&eid=A80CE4DB8B5C89CD&journal_id=1000-0933&journal_name=生态学报&referenced_num=13&reference_num=59