关于参考作物腾发量预报的研究进展

Study On the Research Progress of Reference Crop Evapotranspiration Forecast

目前国内外在参考作物腾发量预报这方面的研究比较多.文中对其预报方法及其适用性、时空变异特性方面进行了系统分析,发现在不同的研究区域,公式的适用性有较大差异.在应用各种改进公式时,需要针对应用地区进行参数校核及结果验证.目前对参考作物腾发量预报时空变异特性研究大多针对年降雨量偏少但蒸发量较大的西北等干旱半干旱地区,而针对南方尤其是沿海湿润地区的研究相对较少,需在逐步应用中得到进一步的研究.

At present,there are many researches on the forecast of reference crop evapotranspiration at home and abroad.The forecasting methods and their applicability,spatiotemporal variability is analyzed in this paper,and it is found that the applicability of the formula has big difference in different research areas.When applying improved formulas,it is necessary to check the parameters and verify the results according to the application area.At present,most studies on the spatiotemporal variability of reference crop evapotranspiration are focused on the arid and semi-arid regions such as northwest China,where the annual rainfall is relatively low but the evaporation is large.However,there are relatively few studies on the south area,especially on the humid coastal areas,and it needs further research in the application.