干旱区生态环境知识资源中心(Arid): 半干旱地区喷灌玉米CERES-Maize模型率定验证及应用

Arid

	半干旱地区喷灌玉米CERES-Maize模型率定验证及应用
其他题名	Calibration,validation and application of the CERES-Maize model for sprinkled maize in the semi-arid region
	温江丽; 李久生
来源期刊	水利学报
ISSN	0559-9350
出版年	2015
卷号	46 期号:5 页码:584-593
中文摘要	作物模型是确定水氮优化管理措施的有力工具,而模型的率定和验证是模拟结果推广应用的前提。利用内蒙古半干旱区2012、2013年的大型喷灌机条件下玉米水氮充足处理对CERES-Maize模型的作物品种参数进行率定,其他不同水氮处理进行验证,并应用模型模拟了不同降雨年型下灌水施肥方案对作物产量和氮素淋失量的影响。模型验证结果表明,CERES-Maize模型可以较好地描述该地区不同水氮处理条件下玉米叶面积指数(LAI)在生育期内的变化过程。中、高灌水量处理玉米生育期内LAI的模拟精度(标准均方根误差nRMSE=23.0%~ 37.7%,一致性指数d=0.612~ 0.945)优于水分亏缺较严重的处理(nRMSE=31.8%~ 60.6%,d=0.501~ 0.878)。产量和收获期干物质质量模拟值与实测值之间的相对误差变化范围为0.1%~ 17.7%,nRMSE变化范围为7.6%~ 8.7%,d变化范围为0.758~ 0.791,吻合程度为优。CERES-Maize模型可用以优化喷灌水氮管理措施。不同降雨年型玉米最优灌水方案为:枯水年灌水次数为10次,灌溉定额为292 mm;平水年和丰水年灌水次数分别为8次和6次,灌溉定额分别为191 mm和95 mm。不同降雨年型最优施肥方案为:基肥的施入量为40 kg/hm~2,拔节期和抽穗期的施入量均为60 kg/hm~2。优化水氮管理措施不仅能够获得较高的玉米产量,还能减少氮素淋失。
英文摘要	Crop model is an efficient tool to determine best management practices of irrigation and fertilization. The calibration and validation of the model is fundamentally important for applying the crop model. In this study,the data obtained from two years (2012 and 2013) experiments of maize conducted in the semiarid region with varying irrigation and nitrogen levels under sprinkler irrigation were used to calibrate and validate the CERES-Maize model. Then the calibrated and verified model was used to evaluate the effect of irrigation and nitrogen schedules on maize yield and nitrogen leaching under different precipitation patterns. The validation shows that the model is able to well capture the variation in LAI during the maize growing seasons. Irrigation level imposes a more important influence on the model accuracy of LAI than nitrogen application rate. Furthermore,the model indicates a high accuracy of LAI for the treatments with sufficient water supply with a normalized root mean square error (nRMSE) ranging from 23.0 % to 37.7 %,and an index of agreement (d) ranging from 0.612 to 0.945. The model shows a low accuracy of LAI for the treatments with severe water deficits with nRMSE ranging from 31.8 % to 60.6 %,and d ranging from 0.501 to 0.878. The yield and plant biomass at harvest are all in excellent agreement with the field measurements with a relative error value ranging from 0.1 % to -17.7 %,and nRMSE ranging from 7.6 % to 8.7 %,and d ranging from 0.758 to 0.791. It is therefore confirmed that the CERES-Maize model can be used to optimize water and nitrogen management practices for sprinkled maize in the semi-arid region. The optimal irrigation amount during a dry year derived from the model is 292 mm applied at ten irrigation events. While the optimal irrigation amount is 191 mm applied at eight events for a normal year and 95 mm applied at six events for a wet year. The recommended optimal nitrogen applied for obtaining high maize yield while reducing nitrogen leaching is 160 kg·hm-2 with 40 kg·hm-2 applied prior to seeding and 60 kg·hm-2 applied during the jointing stage and tasseling stage,respectively.
中文关键词	CERES-Maize模型 ; 半干旱地区 ; 喷灌 ; 玉米 ; 叶面积指数 ; 干物质质量 ; 产量
英文关键词	CERES-Maize model semi-arid region sprinkler irrigation maize leaf area index plant biomass yield
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:5439042
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233289
作者单位	温江丽, 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, 中国.; 李久生, 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, 中国.
推荐引用方式 GB/T 7714	温江丽,李久生. 半干旱地区喷灌玉米CERES-Maize模型率定验证及应用[J],2015,46(5):584-593.
APA	温江丽,&李久生.(2015).半干旱地区喷灌玉米CERES-Maize模型率定验证及应用.水利学报,46(5),584-593.
MLA	温江丽,et al."半干旱地区喷灌玉米CERES-Maize模型率定验证及应用".水利学报 46.5(2015):584-593.