作物农田蒸散计算模型的研究

Study on Calculation Model of Field Evapotranspiration for Different Crops.

农田蒸散是指田间条件下，作物棵间蒸发和蒸腾之和，它涉及土壤作物大气系统，受气象、作物和土壤等多种因素的制约。本文从田间试验出发，综合考虑影响农田蒸散的各种因素，建立了不同作物（棉花、玉米和冬小麦）农田蒸散的计算模型，为今后农业生产中的合理灌溉、节...

Based on the measured data in field and comprehensive consideration over the meteorological condition, crop and soil state, the calculation model of field evapotranspiration, with Penman's field evaporative power, biological function and field soil water availability function. for different crops (cotton , maize and winter wheat) was established. Using routine meteorological and agrometeorological data,the model has good precision and is of value in utilization.