The alternate wetting–drying (AWD) irrigation method in paddy improves water productivity over conventional (CON) irrigation practice. However, the seasonal consumptive water footprints (CWFs) in AWD practice have not been studied extensively for different transplanting dates. In this study, the effect of transplanting date on CWFs of paddy was studied using field experimental data and a crop model for Kharagpur, West Bengal State of India. A popular medium duration of 115–120-day rice variety (IR-36) was selected and cultivated under AWD and CON irrigation practices during kharif (monsoon) and rabi (non-monsoon) seasons of 2015–2016 and 2016–2017 by adopting the existing transplanting dates (i.e. 16 July in kharif and 14 January in rabi). The crop model, APSIM-Oryza, was calibrated and validated using the field data and simulated the evapotranspiration (ET_C), yield, and CWFs under AWD and CON practices. The APSIM-Oryza model was then used to simulate the effect of different transplanting dates on paddy yield, ET_C, and CWFs. The seasonal water savings of AWD practice were 22–29% greater than those of CON practice, with a cost of 2–4% reduction in the yield. The APSIM-Oryza-simulated grain yield was found to be closely matched with the observed for both CON and AWD practices during calibration (R² = 0.96, RMSE < 400 kg ha⁻¹) and validation (R² = 0.85, RMSE < 400 kg ha⁻¹). The early transplanting in both kharif (i.e. 01 July) and rabi seasons (i.e. 15 December) of the study region can produce the maximum yield of 3.67 and 4.30 t ha⁻¹, respectively, with the least CWF of 1221 and 914 m³t⁻¹, respectively, for paddy under AWD practice. Therefore, the early transplanting in both experimental seasons was good enough for obtaining the maximum yield with minimum CWFs under AWD for this study region.

与传统的（CON）灌溉做法相比，水稻的干湿交替（AWD）灌溉方法可提高水生产率。但是，对于不同的移植日期，在AWD的实践中，季节性耗水足迹（CWF）尚未得到广泛研究。在这项研究中，使用田间实验数据和印度西孟加拉邦哈拉格布尔的作物模型，研究了移栽日期对水稻CWF的影响。在2015–2016年和2016–2017年的卡里夫（季风）和狂犬病（非季风）季节，通过选择AWD和CON灌溉实践，选择并种植了115-120天的水稻中度流行期（IR-36），现有的移植日期（即7月16日在哈里夫，1月14日在狂犬病）。作物模型APSIM-Oryza，ET _C），产量和AWF和CON惯例下的CWF。然后使用APSIM-Oryza模型来模拟不同移植日期对水稻产量，ET _C和CWF的影响。AWD作业的季节性节水量比CON作业的节水量高22–29％，单产降低了2-4％。发现在校准（R ²  = 0.96，RMSE <400 kg ha ^-1）和验证（R ²  = 0.85，RMSE <400 ）期间，APSIM-Oryza模拟的谷物产量与CON和AWD实测值紧密匹配。千克公顷^-1）。在研究区域的卡里夫（即7月1日）和狂犬病季节（即12月15日）早期移栽可分别产生最大产量3.67和4.30 t ha ^-1，最小CWF为1221和914 m ³ t ^-1，分别用于AWD练习下的稻田。因此，在该研究区域，在两个实验季节的早期移植都足以在AWD下以最小的CWF获得最大的产量。