中国生态农业学报2011，Vol.19Issue(2)：271-275,5.DOI:10.3724/SP.J.1011.2011.00271
秸秆还田与施氮对冬小麦生长发育及水肥利用率的影响
Effect of corn straw returned to soil and N application on growth, water and nitrogen use efficiency of winter wheat
摘要
Abstract
Through field experiments, the effects of combined N and corn straw application on the growth, grain yield, nitrogen use efficiency (NFUE) and water use efficiency (WUE) of winter wheat in wheat-maize cropping systems were analyzed. At pre-winter and jointing stages, total stems and tillers per plant of wheat under combined N and com straw application were lower than under application of the same rate of N only. At N application rate of 75～225 kg · hm-2, the plant dry weight was higher under combined application of N and corn straw. At booting and maturity stages, dry matter, ears and yield components of wheat under combined corn straw and N application were higher than under N only. Grain yield and WUE under combined corn straw and N application were respectively 58.9～339.6 kg · hm-2 and 0.026～0.083 kg · m-3 higher than under N only. With 75 kg · hm-2 N application, NFUE under combined N and com straw application was lower than under N only, but it became higher with 150～300 kg · hm-2 N application. Corn straw competed with wheat seedling for nitrogen at early growth stages, and soils provided more nitrogen at late growth stages in wheat-maize cropping systems in the Huanghuai Plain. Hence simultaneously incorporating corn straw into soil and applying 225 kg · hrn-2 of N increased both WUE and NFUE. This enhanced yield and winter wheat cultivation efficiency.关键词
秸秆还田/施氮/冬小麦/生长发育/氮肥利用率/水分生产率Key words
Corn straw return to soil/ Nitrogen application/ Winter wheat/ Crop growth/ Nitrogen use efficiency/ Water use efficiency分类
农业科技引用本文复制引用
闫翠萍,裴雪霞,王姣爱,杨峰,曹勇,张晶,党建友..秸秆还田与施氮对冬小麦生长发育及水肥利用率的影响[J].中国生态农业学报,2011,19(2):271-275,5.基金项目
现代农业产业技术体系建设专项(nycytx-03)、公益性行业(农业)科研专项经费项(200903010-07)、山西省农业科学院博士基金项目(ybsjj0803)和山西省农业科学院重点项目(YZD1003)资助 （nycytx-03）
