植物营养与肥料学报2013，Vol.19Issue(4)：972-979,8.DOI:10.11674/zwyf.2013.0425
减量追氮对再生水灌溉设施番茄根层土壤氮素利用的影响
Root-layer soil nitrogen use of greenhouse tomato under reducing nitrogen topdressing with reclaimed water irrigation
摘要
Abstract
Field experiments were carried out to clarify the effects of reducing nitrogen topdressing with reclaimed water irrigation on root-layer soil nitrogen residual of greenhouse tomato.Root-layer soil mineral nitrogen residual,total nitrogen residual,plant biomass,tomato yield,partial factor productivity from applied N and apparent N loss of all treatments were analyzed.The results indicated that soil mineral nitrogen consumption of greenhouse tomato was mainly concentrated in 0 to 30 cm root-layer,and compared with the conventional topdressing application with reclaimed water irrigation treatment,the yield and partial factor productivities from the applied N of the reducing nitrogen topdressing treatments were significantly improved.After the post-harvest of tomato,soil apparent N loss of the reducing topdressing was significantly less than that of the conventional topdressing.Tomato yield is therefore notably improved under reducing nitrogen topdressing with reclaimed water irrigation,maintaining soil fertility,and which is an effective nitrogen management strategy of alleviating soil environment.关键词
减量追氮/再生水灌溉/设施番茄/矿质氮/氮肥偏生产力Key words
reducing nitrogen topdressing/ reclaimed water irrigation/ greenhouse tomato/ mineral nitrogen/partial factor productivity from applied N分类
农业科技引用本文复制引用
李平,胡超,樊向阳,赵志娟,樊涛,齐学斌..减量追氮对再生水灌溉设施番茄根层土壤氮素利用的影响[J].植物营养与肥料学报,2013,19(4):972-979,8.基金项目
国家自然科学基金项目(51009141) （51009141）
国家高技术研究发展计划"污灌农田及退化土壤修复关键技术"课题(2012AA101404)资助. （2012AA101404）
