AquaCrop作物模型应用研究进展

发布时间：2018-03-29 09:15

本文选题：AquaCrop模型　切入点：灌溉策略　出处：《中国农业科学》2017年17期

【摘要】：Aqua Crop是FAO于2009年研发的一款新型作物模型,它以输入参数少、界面简单等优点被广泛应用于生产实践中。论文基于Aqua Crop模型原理和特点,深入探讨了Aqua Crop模型国内外应用研究进展。当前,Aqua Crop模型在灌溉策略、气候变化下的情景模拟以及与其他模型联合应用等方面取得了显著进展。但是,该模型在应用过程中还存在若干缺陷。一是模型在保守参数缺少验证的情况下,会使得模拟精度不稳定;二是由于土壤空间变异性的客观存在,模型在由点位向面上扩展时应用效果不佳;三是当前对雨养区作物生长模拟研究还很少,且其非保守参数难以准确确定;四是目前该模型生理、养分和水养互作模块尚不够完善,未考虑作物病虫害和品种遗传差异,当作物生长遭受水分、盐分或温度等严重胁迫时会导致模拟精度下降。今后在模型应用时,可利用多年数据对保守参数进行校正,将区域同一站点多年数据和多站点相关数据相结合调试模型非保守参数;其次,应加强雨养地区模拟研究,从而扩大模型应用范围。开发者应进一步完善Aqua Crop模型子模块,为提高模拟精度和拓宽应用范围提供支撑。
[Abstract]:Aqua Crop is a new crop model developed by FAO in 2009. It is widely used in production practice because of its advantages of less input parameters and simple interface. This paper is based on the principle and characteristics of Aqua Crop model. In this paper, the domestic and international application of Aqua Crop model is discussed in depth. At present, great progress has been made in irrigation strategy, scenario simulation under climate change and combined application with other models. There are still some defects in the application of the model. One is that the simulation accuracy is unstable when the conservative parameters are not verified, and the other is the objective existence of soil spatial variability. When the model is extended from point to plane, the application effect is not good; third, the current research on crop growth simulation in rain-fed area is still few, and its non-conservative parameters are difficult to determine accurately; fourth, the current model physiology, The interaction module of nutrient and water nutrition is not perfect, and the genetic difference of plant diseases and pests and varieties is not taken into account. When crop growth is under severe stress, such as water, salt or temperature, the simulation accuracy will be reduced. In the future, when the model is used, The conservative parameters can be corrected by using the multi-year data, and the model can be debugged by combining the multi-site data with the multi-site data. Secondly, the rain-fed area simulation research should be strengthened. In order to extend the application scope of the model, the developer should further improve the sub-module of the Aqua Crop model, and provide support for improving the simulation accuracy and widening the application range.
【作者单位】：沈阳农业大学水利学院;辽宁省水文水资源勘测局;
【基金】：国家公益性行业(农业)科研专项(201303125) 国家自然科学基金(51609137) 国家留学基金资助项目(201308210026) 辽宁省教育厅项目(2009A630)
【分类号】：S126

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