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首页> 外文会议>International Conference on Groundwater Research, Jun 6-8, 2000, Copenhagen, Denmark >CERES-wheat model calibration/validation and use for risk assessment of adverse impacts of fertilisers in Bulgaria
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CERES-wheat model calibration/validation and use for risk assessment of adverse impacts of fertilisers in Bulgaria

机译：CERES-小麦模型校准/验证以及用于保加利亚化肥不良影响的风险评估

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摘要

Climate characteristics, water balance parameters and yield of wheat vary substantially over years and soil conditions in Bulgaria. Agricultural practices, especially fertiliser use, modify water transfer and N-uptake associated with this crop and thus the risk of groundwater pollution. The objective of this paper is to test and adjust CERES-wheat model to the typical agricultural conditions in Bulgaria and afterwards to use it for risk assessment analysis under different situations. CERES-wheat model was calibrated during a trial in 1996/97 and validated during the following trial in 1997/98, under impermeable Vertisol soil conditions in Bojurishte (Sofia region). Two levels of nitrogen (0 and 200 kg N/ha) were applied. Water retention and conductivity data measured in laboratory and in the field were compared to literature and used to specify the soil parameters of the model (Fig. 1 -left).
机译：保加利亚的气候特征，水平衡参数和小麦产量随年份和土壤条件的不同而有很大差异。农业实践，特别是肥料的使用，改变了与该作物有关的水的转移和氮的吸收，从而改变了地下水污染的风险。本文的目的是测试和调整CERES-小麦模型以适应保加利亚的典型农业条件，然后将其用于不同情况下的风险评估分析。 CERES-小麦模型在1996/97年的一项试验中进行了校准，并在随后的1997/98年的试验中在Bojurishte（索非亚州）的不可渗透的Vertisol土壤条件下进行了验证。施用了两个水平的氮（0和200 kg N / ha）。将实验室和现场测得的保水率和电导率数据与文献进行比较，并用于指定模型的土壤参数（图1-左）。

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