排灌机械工程学报2016，Vol.34Issue(6)：532-538,7.DOI:10.3969/j.issn.1674-8530.15.0172
滴灌水氮耦合对水氮利用及冬小麦产量的影响
Coupling effects of water -nitrogen on water and nitrogen use efficiency and yield of winter wheat under drip irrigation
摘要
Abstract
With reference to the cumulative 20 cm diameter pan evaporation (E),a field experiment was conducted for 2 consecutive years (2012—2013)to study the coupling effects of water -nitrogen on water consumption,crop physiological indexes and yield of winter wheat under drip irrigation in the North China Plain.The results show that the irrigation-scheduling had significant effects (at 0.05 lev-el)on water consumption,LAI and wheat yield.In a nitrogen application range of 120 to 290 kg/hm2 with drip irrigation,water -nitrogen coupling effects had no significant influence on water consump-tion.At 140 -190 kg/hm2 with irrigation level of 0.80E under drip irrigation,the yield was higher and residual nitrate nitrogen after one season was less.Furthermore,significant increasing in irrigation level and nitrogen level would lead to significant decline in wheat yield.Referring to guarantee yield and low environmental contamination risks,an optimized water -nitrogen combination,irrigation level of 0.80E with nitrogen application of 140 -190 kg/hm2 ,was recommended under drip irrigation in the North China area.关键词
大田滴灌/水氮耦合/灌水定额/施氮量/优化Key words
drip irrigation/coupling of water -nitrogen/irrigation level/nitrogen level/optimization分类
农业科技引用本文复制引用
隋娟,王建东,龚时宏,张彦群,岑娟娟,郭健..滴灌水氮耦合对水氮利用及冬小麦产量的影响[J].排灌机械工程学报,2016,34(6):532-538,7.基金项目
国家自然科学基金资助项目（51279211，51309250）；国家“十二五”科技支撑计划项目 （）
