摘要
为检验WOFOST模型在河南夏玉米主产区的适用性,通过大田试验数据,对WOFOST进行参数校准,并利用独立数据,对夏玉米叶面积指数、生物量、产量的模拟结果进行验证。结果表明,校准后的WOFOST对叶面积指数、生物量和产量的模拟效果较好。在整个生育期内,叶面积指数模拟值与观测值的归一化均方根误差(NRMSE)为20.7%,茎、叶、籽粒各器官干物质量及地上部生物量模拟值与观测值的NRMSE分别为10.6%、18.3%、21.3%、17.7%,夏玉米收获产量模拟值与观测值的NRMSE为6.1%。校准后的WOFOST可较准确地模拟夏玉米生长动态及生物量积累动态,适用于河南夏玉米主产区夏玉米生长模拟和产量预测。
To test applicability of WOFOST model in main maize-producing regions in Henan province,WOFOST model was firstly calibrated by the field data collected in 2007,and then the simulated and measured values of leaf area index(LAI),total biomass,and grain yield were compared in Zhengzhou,Xinxiang and Xuchang of Henan province,to evaluate the simulation performance of WOFOST.The results showed that the model could simulate well the leaf area index,total aboveground dry matter,and yield.In the whole growth period,the normalized root mean square error(NRMSE)for LAI was 20.7%,and the NRMSEfor dry weight of stems,leaves,grains,and total aboveground part were 10.6%,18.3%,21.3%,17.7%respectively.The NRMSEfor grain yield at harvest was 6.1%.The calibrated model can satisfactorily simulate the dynamical process of growth and development of summer maize,and is suitable for simulation of maize growth and prediction of maize yield in Henan province.
出处
《河南农业科学》
CSCD
北大核心
2014年第8期152-156,共5页
Journal of Henan Agricultural Sciences
基金
国家高分辨率对地观测系统重大专项(09-Y30B03-9001-13/15)
河南省重大科技专项(121100110900)
河南省超级产粮大省奖励资金扶持农业科研项目[豫财贸(2011)140号]
关键词
夏玉米
WOFOST模型
校准
验证
河南省
summer maize
WOFOST model
calibration
validation
Henan province