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Position: Home > Articles > Decision for Optimized Water Management Based on CERES-Maize Crop Model Journal of Soil and Water Conservation 2009,23 (1) 187-192

基于CERES-Maize模型春玉米水分优化管理决策

作  者:
戴明宏;赵久然;Wilhelm Claupein;王璞
单  位:
德国霍恩海姆大学作物生产和草地研究所;北京市农林科学院玉米研究中心;中国农业大学信息与电气工程学院;中国农业大学农学与生物技术学院
关键词:
CERES-Maize;春玉米;水分管理;播期
摘  要:
在完成DSSAT(4.0.1.0)中CERES-Maize模型参数的校正和验证之后,利用30年(1976-2005年)的气象资料针对北京地区的春玉米生产进行模拟。结果表明,在充分灌溉的条件下,春玉米4月底播种多年平均产量为11.5 t/hm2,当播期推迟至5月底时产量平均提高了4.1%。推迟播期后,春玉米生育期内降雨分布更加均匀。4月底播期的推荐灌溉量多年平均为150 mm,推迟播期后推荐灌溉量减少了50 mm,水分利用率提高了14.9%。在仅灌底墒水及雨养条件下,推迟播期后WUE则分别提高了25.4%和35.6%。5月底播种时,仅灌底墒水在67%的年份里产量达到充分灌溉的水平,即使在雨养条件下仍在50%的年份里和自动灌溉持平。
译  名:
Decision for Optimized Water Management Based on CERES-Maize Crop Model
作  者:
DAI Ming-hong1,2,ZHAO Jiu-ran1,Wilhelm Claupein3,WANG Pu4(1.Maize Research Center,Beijing Academy of Agricultural and Forestry Sciences,Beijing 100097;2.College of Information and Electrical Engineering,China Agricultural University,Beijing 100083;3.Institute of Crop Production and Grassland Research,University of Hohenheim,Stuttgart,Germany D70593;4.College of Agriculture and Biology Technique,China Agricultural University,Beijing 100193)
关键词:
CERES-Maize;spring maize;water management;sowing date
摘  要:
After calibration and validation of CERES-Maize crop model in DSSAT(4.0.1.0),a simulation was operated for determining optimized water management strategy by using 30 years(1976-2005) climate data in Beijing region.The results showed,under auto-irrigation pattern,annual average grain yield of spring maize sowed in the end of April was 11.54 t/hm2.When sowing date was delayed to the end of May,grain yield could be enhanced 4.1%.As the sowing date delaying,rainfall distribution in spring maize growing season was more uniform,meanwhile demand of water irrigated decreased about 50 mm and WUE was enhanced 14.9%.Under the treatments of pre-sowing water only and rain-fed condition,WUE were enhanced 25.4% and 35.6% respectively as the sowing date delaying.Under the sowing date of the end of May,there were 67% years under application of pre-sowing water only,and 50% years under rain-fed grain yield could reach level of auto-irrigation management.

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