Landscape-Scale Simulation of Pesticide Behavior in River Basin due to Runoff from Paddy Fields Using Pesticide Paddy Field Model (PADDY)
Landscape-Scale Simulation of Pesticide Behavior in River Basin due to Runoff from Paddy Fields Using Pesticide Paddy Field Model (PADDY)
复制标题
使用农药稻田模型 (PADDY) 对稻田径流引起的流域农药行为进行景观尺度模拟
DOI：
10.1584/jpestics.28.24
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Y. Kitamura
中科院分区：
文献类型：
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作者：
K. Inao;Y. Ishii;Y. Kobara;Y. Kitamura
建立了一个基于PADDY的大尺度模拟模型（PADDY-Large），用于预测稻田径流引起的排水渠和河流中农药浓度。根据农业水文学中使用的灌溉系统，将水稻产区划分为“田间地块”、“农场区块”、“区域”和“流域”，并估计了“区域”区域内主要排水渠的农药行为。为了验证该模型，在水稻产区进行了农药残留监测。该地区一条主要排水渠中的除草剂浓度在5月初有所增加，5月中旬达到最大值，7月初降至检测限以下。结合水稻产区农药实际使用情况和环境条件，得到了除草剂苯噻草胺在总干渠中模拟浓度与实测浓度之间的相关性。
A landscape-scale simulation model (PADDY-Large) based on PADDY was developed for predicting pesticide concentrations in drainage canals and rivers due to runoff from paddy fields. Based on the irrigation systems used in agrohydrology, a rice-producing area was classified into a “field plot”, “farm block”, “district”, and “river basin” and pesticide behavior was estimated focusing on the main drainage canals in the “district” area. To validate the model, a surveillance of pesticide residues was carried out in a rice-producing area. Herbicide concentrations in a main drainage canal in the area increased in early May, reached a maximum in mid May, and declined to below detection limits by early July. The correlation between simulated and observed concentrations of a herbicide mefenacet in the main canal were obtained by considering actual pesticide use and environmental conditions in the rice-producing area.