%0 Journal Article
%T Effect of Control Release Urea on Spring Maize Yield, N Use Efficiency and SoilNitrogen<br>控释尿素对玉米产量、氮肥利用率及土壤氮素的影响
%A |CAO Ning
%A CHEN Zhi-yi
%A YAN Fei
%A YANG Zhen-ming
%A <br>曹宁
%A 陈志怡
%A 闫飞
%A 杨振明
%J 吉林农业大学学报
%D 2012
%I 
%X The experiments were conducted to investigate the effects of single basal application of control release urea with kieselguhr as the carrier on rate of yield of maize,shoot dry weight and N uptake of maize in different growth stages,NH4+-N and NO3——N of soil.The results show that control release urea application could increase shoot dry weight and N use efficiency of maize,inhibit urease activity of soil and maintain soil NH4+-N and NO3——N during the late growth stage.The treatments of twice fertilization and control release urea could increase yield by 23.48% and 17.70%,improve N use efficiency by 17.33% and 17.58%,respectively.Therefore,the control release urea in this study can be used by single basal application to maize production system,and help to change twice fertilization(basal and dressing) to once fertilization(basal),and thus benefit to labor-saving and improve nitrogen utilization efficiency.
%K control release urea
%K soil urease activity
%K available nitrogen
%K maize yield<br>控释尿素
%K 土壤脲酶活性
%K 速效氮
%K 玉米产量
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=298920A27C9BAA22346FCA384240FAA4&jid=74C612B26EF38BF0D4C997E3F9E167A1&aid=D812A4F49570FC503891F4FDDC6B44E9&yid=99E9153A83D4CB11&vid=339D79302DF62549&iid=CA4FD0336C81A37A&sid=7AA74D31F1FF2DCE&eid=CFAC5CB624A41AFD&journal_id=1000-5684&journal_name=吉林农业大学学报&referenced_num=0&reference_num=0