史培军,
北京师范大学地表过程与资源生态国家重点实验室，100875，北京
北京师范大学地理科学学部，应急管理部-教育部减灾与应急管理研究院，100875，北京
青海师范大学高原科学与可持续发展研究院，810008，青海西宁
基金项目:国家自然科学基金创新研究群体资助项目(41621061)
详细信息
通讯作者:史培军(1959-)，男，博士，教授. 研究方向：环境演变与自然灾害. e-mail: spj@bnu.edu.cn
中图分类号:S512.11计量
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被引次数:0
出版历程
收稿日期:2019-12-18
网络出版日期:2020-07-22
刊出日期:2020-10-31
Optimization of irrigation scheduling for spring wheat in Hetao Plain with DSSAT model
Yichen LI,Peijun SHI,
State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, 100875, Beijing, China
Academy of Disaster Reduction and Emergency Management, Ministry of Emergency Management & Ministry of Education, 100875, Beijing, China
Academy of Plateau Science and Sustainability, Qinghai Normal University, 810008, Xining, Qinghai, China
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摘要
摘要:以河套平原临河站点监测的春小麦“永良4号”品种为例，运用DSSAT-CERES-Wheat模型，经过参数校正和验证，模拟不同生育期多种灌溉配额组合下的春小麦产量，优化灌溉方案，提高灌溉水生产效益. 研究结果表明：1）DSSAT-CERES-Wheat模型能较好地模拟河套平原春小麦“永良4号”的生长过程；2）春小麦的灌溉水生产效益随总灌溉量增加呈下降趋势；3）分蘖期灌溉是保证春小麦产量的基础，拔节期的灌溉量对提高灌溉水生产效益作用最为明显，春小麦产量对乳熟期灌溉量的响应最不敏感；4）春小麦分蘖期、拔节期、抽穗期、开花期分别灌溉30、105、30和30 mm的水量，为河套平原春小麦“永良4号”品种的最优节水灌溉方案，优化后的方案可保证春小麦产量，并且能提高春小麦灌溉水生产效益与灌溉水利用效率.
关键词:生产效益/
河套平原/
春小麦/
优化灌溉/
DSSAT
Abstract:DSSAT model after calibration and test was used to simulate spring wheat yields under various irrigation schemes with different irrigation water quotas at different growth stages, for the spring wheat “Yongliang 4” at Linhe site in Hetao Plain, in order to optimize the irrigation schemes under different irrigation water supply amounts and to improve irrigation water productivity. The DSSAT-CERES-Wheat model was found to perform satisfactorily in simulating growth period and yield. The irrigation water productivity of spring wheat was found to decrease with increasing total irrigation water amount. Irrigate at tillering stage was found essential to keep spring wheat grow normally. Yield and irrigation water productivity of spring wheat were most sensitive to the irrigation water at jointing stage. Yield and irrigation water productivity of spring wheat were found least sensitive to irrigation water at milk-ripe stage. Irrigation to 30, 105, 30, 30 mm at tillering, jointing, heading and anthesis stages respectively were found to be the best to improve irrigation productivity and efficiency, maintaining wheat yield.
Key words:irrigation water productivity/
Hetao Plain/
spring wheat/
irrigation optimization/
DSSAT
