华北地区夏玉米水分生产率多参数全局敏感性分析  

Global Sensitivity Analysis of Summer Maize Water Productivity in North China

作　　者：于颖多[1,2] 陈华堂[3] 魏征[1,2] 张宝忠[1,2] YU Ying duo;CHEN Hua tang;WEI Zheng;ZHANG Bao zhong(State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources andHydropower Research, Beijing 100038, China;National Center of Efficient Irrigation Engineering and Technology Research,Beijing 100048, China;China Irrigation and Drainage Development Center, Beijing 100054, China)

机构地区：[1]中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038 [2]国家节水灌溉北京工程技术研究中心,北京100048 [3]中国灌溉排水发展中心,北京100054

出　　处：《中国农村水利水电》2019年第9期43-48,共6页China Rural Water and Hydropower

基　　金：“十三五”国家重点研发计划资助项目(2017YFC0403200);优秀青年科学基金项目“蒸散发尺度效应与时空尺度拓展”(51822907);中国水利水电科学研究院基本科研业务费专项(节基本科研01881910)

摘　　要：量化限制因素的敏感性对协同提升作物水分生产率具有重要意义,为了探讨作物水分生产率在不同土壤、气象以及田间管理措施下参数的敏感性,以华北地区夏玉米为研究对象,采用扩展傅里叶幅度检验法,量化了基于DNDC模型的夏玉米水分生产率对土壤、气象和田间管理(灌溉水量、施肥量)等10个参数的敏感程度,结果表明: DNDC模型能够有效地模拟0~50 cm土壤水分、作物蒸发蒸腾量、作物生长过程以及产量;灌溉水量、土壤初始氨氮浓度、CO-2浓度、第二次施肥量、降雨量以及日最高温度是不同水文年条件下对夏玉米水分生产率敏感程度高的限制因素。当水文年型由丰水年-平水年-枯水年转变时,灌溉水量的敏感性呈高于施肥量的敏感性的变化趋势,因此,考虑限制因素的敏感程度将更有助于提出区域分异下水分生产率多要素协同提升的技术途径。It is essential to quantify the parameters' sensitivity to improve the crop water productivity. Summer maize is used as the research object so as to investigate the parameters' sensitivity in different soils, meteorology and tillage measures of summer maize water productivity. The extended Fourier amplitude test is used as the analysis method. Research results show that the DNDC model can effectively simulate the soil moisture and crop growth process with 0~50 cm soil moisture, ET-c , crop growth process and yield. Irrigation water volume, initial soil ammonium concentration, CO-2 concentration, the second fertilization amount, rainfall and daily maximum temperature are factors which can limit summer maize water productivity in different hydrological years. When the hydrological age is changed from flood year to flat year and then to low flow year, the sensitivity of the irrigation water is higher than that of the fertilization amount. Therefore, the sensitivity of the limiting factor will be helpful to improve the regional agricultural water production efficiency and multi-elements, and thus enhancing the technical approach.

关 键 词：水分生产率 全局敏感性分析 模型 DNDC 夏玉米 

分 类 号：TV93[水利工程—水利水电工程] S513[农业科学—作物学]