水土保持学报2012，Vol.26Issue(6)：291-296,6.
水氮互作对冬小麦耗水特性和水分利用效率的影响
Effects of Nitrogen and Irrigation Interaction on Water Consumption Characteristics and Use Efficiency in Winter Wheat
摘要
Abstract
This field experiment was performed by using split-plot design to investigate the effects of different nitrogen and irrigation interaction on water consumption characteristics and utilization in winter wheat.In this study,four irrigation levels(0 m3/hm2(W0),900 m3/hm2(W900),1 200 m3/hm2(W1200),1 500 m3/hm2(W1500)) in main plots and five nitrogen levels(0 kg/hm2(N0),90 kg/hm2(N90),150 kg/hm2(N150),210 kg/hm2(N210),270 kg/hm2(N270)) in sub-plots were used.The results showed that: At the maturity of winter wheat,the lowest soil moisture content was observed in 0-20 cm layer during the 0-200 cm soil profile;the peak values of soil moisture content appeared between the layer of 60 cm and 120 cm,and increased with the increase of irrigation rate.Water consumption amounts(WCA) increased,and the proportion of the precipitation and soil water supply in WCA decreased with increasing irrigation rate.The percentage of rainfall and irrigation in WCA and soil water supply proportion in WCA increased with the increasing nitrogen application.Water consumption rate and water consumption percentage during the productive stage of winter wheat showed that the maximum from flowering to maturity.Water use efficiency,precipitation use efficiency and soil water use efficiency increased,but the irrigation water use efficiency decreased with the increase of irrigation rate.Meanwhile,water use efficiency,precipitation use efficiency,soil water use efficiency increased and irrigation water use efficiency first increased and then decreased as nitrogen application increased,and there were no significant differences among the treatment N150,N210 and N270.关键词
灌水量/施氮量/冬小麦/耗水特性/水分利用效率Key words
irrigation rate/nitrogen rate/winter wheat/water consumption characteristics/water use efficiency分类
农业科技引用本文复制引用
栗丽,洪坚平,王宏庭,谢英荷,张璐..水氮互作对冬小麦耗水特性和水分利用效率的影响[J].水土保持学报,2012,26(6):291-296,6.基金项目
国家“十一五”科技计划支撑项目 （）
山西农业大学科技创新基金项目 （）
