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为将AquaCrop模型应用于华北平原夏玉米水分研究中,于2011-2012年在中国科学院栾城农业生态系统试验站进行了夏玉米水分处理试验,在参数率定与模型验证的基础上对华北平原水量平衡及水分利用效率的现状进行了分析。结果表明,AquaCrop模型能够较好地模拟夏玉米的产量、生物量、冠层发育过程以及表层土壤水储量的动态变化。从生物量角度来看,夏玉米的水分利用效率在8月中旬达到最大,可达10 kg/m3左右,其整个生长季水分利用效率为4.9-5.8 kg/m3;从产量角度来看,水分利用效率为2.3-3.0 kg/m3,且在整个生长季土壤水储量呈增加趋势。研究阐明了AquaCrop模型在华北平原地区有较好的适用性,可以应用于夏玉米耗水与水分利用效率方面的研究。
In order to apply AquaCrop model to summer maize moisture in North China Plain, summer maize moisture treatment experiment was carried out at Luancheng Agro-Ecosystem Experimental Station, Chinese Academy of Sciences from 2011 to 2012. Based on parameter calibration and model verification, Water balance and water use efficiency of the status quo were analyzed. The results show that AquaCrop model can simulate the dynamic changes of summer maize yield, biomass, canopy development and surface soil water reserves. From the perspective of biomass, the water use efficiency of summer maize reached its maximum at about 10 kg / m3 in mid-August, with a water use efficiency of 4.9-5.8 kg / m3 throughout the growing season. From a production point of view, The utilization efficiency was 2.3-3.0 kg / m3, and soil water storage tended to increase throughout the growing season. The study clarified that AquaCrop model has good applicability in the North China Plain and can be applied to study on water consumption and water use efficiency of summer maize.