Consumptive water footprint (CWF) is a comprehensive measure of water consumption by paddy and can be used to assess the impact on freshwater volume. The seasonal water consumption and water footprints of paddy under any irrigation practice vary with changing the transplanting dates. The present study aimed to investigate the impact of shifting transplanting dates on CWFs of paddy under the system of rice intensification (SRI) using a crop model. A medium-duration variety (IR-36) was cultivated during kharif (monsoon) and rabi (non-monsoon) seasons of 2015/16 and 2016/17. The field data were used to calibrate and validate the crop model, Agricultural Production Systems Simulator (APSIM)-Oryza, as well as simulate paddy yield, evapotranspiration and consumptive water footprints (CWFs) under different transplanting dates.

中文翻译：

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水稻集约化制度下改变移栽期对水稻消耗水足迹影响的建模

消耗水足迹 (CWF) 是稻谷耗水量的综合衡量指标，可用于评估对淡水量的影响。任何灌溉方式下水稻的季节性耗水量和水足迹随移栽日期的变化而变化。本研究旨在使用作物模型研究在水稻集约化（SRI）系统下移栽日期对水稻 CWF 的影响。在 2015/16 和 2016/17 的 kharif（季风）和 Rabi（非季风）季节种植了一种中期品种 (IR-36)。田间数据用于校准和验证作物模型、农业生产系统模拟器 (APSIM)-Oryza，以及模拟不同移栽日期下的水稻产量、蒸散量和消耗水足迹 (CWF)。