滇中是云南主要高原特色作物主产区，开展灌溉制度研究对当地水资源优化配置、高效利用具有重要意义。基于滇中南部建水（102°50′E、23°56′N）2016~2018年灌溉试验数据，对CROPWAT模型中灌水量计算模块所涉及的作物、土壤参数进行了校准，并应用该模型模拟了水稻和马铃薯全生育期的灌水量过程。结果显示，模拟的水稻泡田水量在192.3~195.0 mm之间，本田期灌水次数在8~11次、灌水定额在20.9~45.9 mm、灌溉定额在288.3~414.4 mm之间，全生育期灌溉定额在483.3~609.7 mm之间，与试验观测的灌溉定额相差在±6%以内；马铃薯全生育期灌水次数在7~8次、灌水定额在12.7~38.3 mm、灌溉定额在181.5~201.0 mm之间，与试验观测的灌溉定额相差在±12%以内。灌水次数模拟与试验观测值接近，灌水定额水稻模拟值略偏小、马铃薯模拟值略偏大，灌水时间虽然略有差异但总体相应性较好。结果表明，该模型在滇中南部水稻和马铃薯灌水量过程模拟中的应用效果较好，用于制定灌溉制度可更好地把握灌水时间，提高制定灌溉制度的精度。

Central Yunnan was the major plateau characteristics agricultural products areas in Yunnan province, and the study on irrigation system has an important significance in the local water resources optimal allocation and efficient utilization. Based on the experimental data of Jianshui (102°50′E, 23°56′N) in the south of Central Yunnan from 2016 to 2018, the crop and soil parameters involved in the irrigation calculation module of CROPWAT model were calibrated and the irrigation process of rice and potato during the whole growth period were simulated by the model. The results showed that the water quantity of rice ponding simulated by the model was 192.3 to 195.0 mm; the irrigation times during the growth period of rice after transplanting was 8~11 times, the irrigating quota was 20.9~45.9 mm, the irrigation quota was between 483.3 to 609.7 mm in all growth period, the irrigation ration was 288.3~414.4 mm, and the difference in the irrigation quota between the model stimulation and the test observation was within ±6%; during the whole growth period of potatoes, the irrigation times were 7~8 times, the irrigating quota was 12.7~38.3 mm, the irrigation ration was 181.5~201.0 mm, and the difference in the irrigation quota between the stimulation and the test observation was within ±12%; the simulation of irrigation times was close to the test observation, and the simulated irrigation quota was smaller for rice and larger for potato; there was a slight difference in the irrigation time, but the overall responsiveness was better. It was indicated that the model had better application effect in stimulating the process of irrigation of rice and potato in the south of Central Yunnan and the irrigation schedule developed by the model could improve our grasp of irrigation time and irrigation quota and improve the accuracy of irrigation schedule.