农业工程学报2011，Vol.27Issue(1)：15-21,7.DOI:10.3969/j.issn.1002-6819.2011.01.003
沟灌方式和水氮对玉米产量与水分传导的影响
Effects of different furrow irrigation patterns, water and nitrogen supply levels on hydraulic conductivity and yield of maize
摘要
Abstract
Effects of different furrow irrigation patterns, water and nitrogen supply levels on hydraulic conductivity and yield of maize were studied by orthogonal experiment design.Hydraulic conductivity of maize root and shoot was measured for stage of shooting, heading and late filling by transient method with High Pressure Flow Meter (HPFM) developed by Dynamax Corporation in USA in the maize field.The results showed that maximum root and shoot hydraulic conductivity was obtained in stage of shooting, its value was gradually smaller along with growing stage.The optimal combination was obtained by the yield and hydraulic conductivity of maize in this experiment, which the relative furrow irrigation patterns was alternate partial root-zone furrow irrigation pattern and the irrigation quota was 282mm, and the quantity of supply nitrogen was 240 kg.hm-2.It is obvious that alternate furrow irrigation repeating watering for growing root in drying rootzone, promoting root and shoot hydraulic conductivity increased, water fertilization use and transport efficiency improved, and higher nitrogen accumulation in plant and yield of maize was obtained.关键词
灌溉/氮/水分/根系及冠层水导/产量/植株氮/玉米Key words
irrigation/ nitrogen/ moisture/ root and shoot hydraulic conductivity/ yield/ nitrogen accumulation in plant/maize分类
农业科技引用本文复制引用
杨启良,张富仓,刘小刚,戈振扬..沟灌方式和水氮对玉米产量与水分传导的影响[J].农业工程学报,2011,27(1):15-21,7.基金项目
国家自然科学基金(50579066,50879073,51009073) （50579066,50879073,51009073）
云南省应用基础研究面上项目(2010ZC042) （2010ZC042）
