A Fourier series model for forecasting reference crop evapotranspiration
A Fourier series model for forecasting reference crop evapotranspiration
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发表时间：
2005
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通讯作者：
Cai Xue-liang
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作者：
Cai Xue-liang
提出了一种新的参考作物腾发量预测模型。参考作物腾发量预测在作物需水量预测和灌溉管理中具有重要作用。根据参考作物腾发量具有较强的季节变化趋势，日平均值近似于傅里叶级数的和，采用与改进的日平均模型相似的方法，本文提出了一种傅立叶级数模型，应用于陡山灌区，结果表明，该模型能提高预报精度，且模型简单，易于与灌溉预报系统或灌溉调度程序集成。
A new model for forecasting reference crop evapotranspiration is presented.Forecasting reference crop evapotranspiration plays an important role in crop water requirements forecasting and irrigation management.Based on the fact that reference crop evapotranspiration changes in a strong seasonal trend and the daily means fit to the summation of Fourier series approximately,using the method similar with modified daily mean model,we proposed a Fourier series model.The results of application to Doushan Irrigation System show that it can improve the accuracy of forecasting.This model is simple and can be easily integrated with an irrigation forecasting system or irrigation scheduling program.