DNDC模型在华北平原冬小麦区的率定和验证  

The Calibration and Validation of DNDC Model in Winter Wheat Regions of North China Plains

作　　者：乔帅帅 胡振华[1] 魏征[2,3] 张宝忠[2,3] QIAO Shuai-shuai;HU Zhen-hua;WEI Zheng;ZHANG Bao-zhong(Forestry College, Shanxi Agricultural University, Jinzhong 030801, Shanxi Province, China;State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China;National Center of Efficient Irrigation Engineering and Technology Research-Beijing, Beijing 100048, China)

机构地区：[1]山西农业大学林学院,山西晋中030801 [2]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 [3]国家节水灌溉北京工程技术研究中心,北京100048

出　　处：《中国农村水利水电》2018年第6期22-26,共5页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(51479210);水利部公益性行业科研专项项目(201501017);现代农业产业技术体系建设专项项目(Nycytx-35)

摘　　要：为了研究DNDC模型在华北平原典型作物-冬小麦的适用性,利用DNDC模型对冬小麦不同灌溉制度下小麦生长进行模拟和验证,并对模型精度进行评价。基于2015和2016年冬小麦生育期实测数据,建立了不同灌溉制度下冬小麦DNDC模型,分析了不同作物参数对冬小麦生育期的生物量和产量的敏感性排序,率定和验证了DNDC模型参数,并对模型精度进行了评价。结果表明,作物需水量对产量和地上部生物量的敏感性较大;不同灌溉制度下冬小麦生育期的土壤水分、地上部生物量以及产量的实测值与模拟值的各项评价指标均在可接受范围内,DNDC模型可以较好的模拟华北地区冬小麦生育期间的土壤含水量、地上部生物量和产量,对冬小麦的生产有一定的指导意义。In order to study the applicability of DNDC model to winter wheat in typical crops of North China Plains,the DNDC model is used to simulate and verify the wheat growth under different irrigation regimes and the accuracy of the model is evaluated. Based on the measured data of winter wheat growth period in 2015 and 2016,the DNDC model of winter wheat under different irrigation regimes is established,the sensitivity of different parameters is analyzed to soil moisture,biomass and yield during the growth of winter wheat. The DNDC Model parameters are also calibrated and verified,and the accuracy of the model is evaluated in this study. The results show that,crop water demands are more sensitive to yield and above ground biomass. Under the different irrigation systems,the all evaluation indexes between the measured value and the simulated value of soil moisture,above ground biomass and yield during the growth period of winter wheat were within acceptable range. DNDC model can simulate the soil moisture,above ground biomass and yield of winter wheat during growth period in North China better,which is of guiding significance to the production of winter wheat.

关 键 词：DNDC模型 冬小麦 模型率定 模型验证 

分 类 号：TV93[水利工程—水利水电工程] S512.1[农业科学—作物学]