基于稻田氮平衡模型的不同灌排调控下的氮素损失  

The Nitrogen Loss in Different Irrigation and Drainage Based on Paddy Nitrogen Balance Model

作　　者：郭思怡 刘威锋[3] GUO Si-yi;LIU Wei-feng(Anhui Province(MWR Huaihe River Water Resources Commission)Hydraulic Research Institute,Hefei,Anhui 230061;State Key Laboratory of Water Resources and Hydraulic Engineering,Hohai University Hydrology/Water Conservancy and Hydropower Engineering,Hohai University,Nanjing,Jiangsu 210098;Bureau of Supervision and Examination Survey Cost Pricing of Anhui Provincial,Hefei,Anhui 230001)

机构地区：[1]安徽省(水利部淮河水利委员会)水利科学研究院,安徽合肥230061 [2]河海大学水文水资源与水利工程科学国家重点实验室/河海大学水利水电学院,江苏南京210098 [3]安徽省物价局成本调查监审局,安徽合肥230001

出　　处：《安徽农业科学》2018年第32期186-188,212,共4页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金重点项目(50839002-5)

摘　　要：[目的]研究不同灌排方案下的稻田的排水氮素损失。[方法]根据田间试验数据,利用稻田氮平衡模型分析计算不同灌排方案的排水氮素损失。[结果]与常规灌溉相比,控制灌溉C、C1、C2稻田氮浓度均值分别减少12.25%、7.84%、3.92%;稻田排水量分别减少29.95%、32.94%、29.76%;稻田排水损失氮量分别减少38.40%、38.22%、32.51%;稻田排水损失氮量占施氮量的比例分别减少38.47%、38.21%、32.54%。[结论]控制灌溉可减少稻田氮损失。[Objective]To study nitrogen loss in paddy field under different irrigation and drainage schemes.[Method]According to the data of field experiment,the nitrogen loss of different irrigation and drainage schemes was calculated by using the nitrogen balance model of paddy field.[Result]Compared with conventional irrigation,the average nitrogen concentration of C,C 1 and C 2 paddy fields under controlled irrigation decreased by 12.25%,7.84%and 3.92%respectively;the discharge of paddy fields decreased by 29.95%,32.94%and 29.76%respectively;the nitrogen loss of paddy field drainage decreased by 38.40%,38.22%and 32.51%respectively;and the proportion of nitrogen loss in paddy field drainage decreased by 38.47%and 38.51%respectively.21%,32.54%.[Conclusion]Controlled irrigation can reduce nitrogen loss in paddy field.

关 键 词：稻田 排水 氮素损失 灌排调控 

分 类 号：S27[农业科学—农业水土工程]