摘要
利用1991~2004年黄淮夏播玉米区8个试验站的气象、土壤、田间管理等基础数据对DSSAT 4.0中的CERES-Maize模型进行参数调整和检验。使用调参后的模型模拟黄淮夏播玉米区不同生育期缺水对玉米产量的影响。模拟结果表明,在营养生长阶段,拔节期为水分对玉米产量影响关键期;生殖生长阶段,灌浆期为水分关键期,其中灌浆前期水分对产量影响最大。7叶期和拔节期缺水时最大叶面积指数显著降低,阻碍植株干物质积累,茎叶干重显著降低;灌浆前期缺水穗粒数显著减少;灌浆中期缺水显著降低百粒重。
Based on meteorological data, soil data and field management data of 8 summer maize areas＇ observing stations in Huanghuai region from 1991 to 2004, the parameters of CERES-Maize model of DSSAT 4.0 were modified and localization tested. The effects of water shortage conditions in different growth stages on the final yield of summer maize in Huanghuai region were simulated with the validating model. The results showed that the jointing stage and the earlier milking stage were the moisture critical periods for maize growth in the vegetative growth stage and in the reproductive growth stage, respectively. In comparison, water shortage at the earlier milking stage had the greatest im- pact on the final yield of maize. The maximum leaf area index and the dry weight of stem and leaf of summer maize would be significantly reduced and the accumulation of dry matter above the ground would be hindered with the lack of water at seven leaves stage or jointing stage, while the grain number per spike and the kernel weight would be sig- nificantly reduced when the water shortage happened at earlier and middle milking stage.
出处
《玉米科学》
CAS
CSCD
北大核心
2013年第5期151-156,共6页
Journal of Maize Sciences
基金
公益性行业(气象)科研专项(GYHY201206022)
中国气象局气象关键技术集成与应用项目(CMAGJ2013M29)
中国气象局农业气象保障与应用技术重点开放实验室科学研究基金项目(AMF200910)
关键词
夏玉米
CERES模型
缺水影响
Summer maize
CERES-Maize model
Water shortage influence
