Several methods and models for the real-time forecast of the reference crop evapotranspiration were discussed.The opinion of optimization between different models was proposed during application.

• 评述了参考作物蒸发蒸腾量实时预报的几种方法，指出了在具体应用时宜结合实际情况进行模型的优化择选以提高预测精度。