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用参数调试后的DSSAT-CERES Wheat模型,以郑州地区冬小麦全生育期降水偏缺的2003—2004年逐日气象资料为背景数据,在分析作物阶段缺水量的基础上,限定灌溉量100mm以内,分不灌水、灌一水、二水、三水处理,着重模拟研究限量灌溉对冬小麦水分利用的影响,并引入田间水分管理反映指标(WMRIs)为优化灌溉方案设计提供综合评价参考。结果表明:限量灌溉可在一定程度上缓解水分胁迫,促进增产并提高水分利用效率;各种处理均较不灌水明显增产,增产率为13.1%～73.3%;小麦对水分的吸收利用总体表现为灌二水优于灌三水优于灌一水;水分利用效率越冬水+灌浆水最高,灌溉水利用效率拔节水最高;拔节期是限量灌溉的最佳时期。
Based on the daily meteorological data of 2003-2004, the annual precipitation of winter wheat during the whole growth period of Zhengzhou area, the DSSAT-CERES Wheat model after parameter debugging was used. Based on the analysis of the water deficit at the crop stage, the limited irrigation amount was within 100 mm, Irrigation, irrigation of one, two, three water treatment, focusing on simulation study of limited irrigation on water use of winter wheat, and the introduction of field water management indicators (WMRIs) for the optimal design of irrigation programs to provide a comprehensive evaluation of reference. The results showed that limited irrigation could relieve water stress to a certain extent, increase yield and increase water use efficiency. All treatments significantly increased yield compared with no irrigation, yield increasing rate was 13.1% ~ 73.3%. The water absorption and utilization of wheat was generally Irrigation irrigation is superior to Irrigation irrigation Sanshui irrigation water; water use efficiency winter water + grouting water is the highest irrigation water use efficiency jointing water is the highest; jointing stage is the optimal period of limited irrigation.