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依据山西省汾河灌区三站多年冬小麦与夏玉米生育期土壤含水量实测资料及相应气象资料建立了土壤墒情预报的经验模型和消退指数模型,并对两种模型进行了检验。结果表明,上述两种模型均能满足预报精度要求,但消退指数模型的精度比经验模型更高。
According to the measured data and corresponding meteorological data of soil moisture of three years of winter wheat and summer maize in Fenhe Irrigation Area of Shanxi Province, the empirical model and extinction index model of soil moisture were established, and the two models were tested. The results show that the above two models can meet the prediction accuracy requirements, but the extinction index model accuracy is higher than the empirical model.