夏玉米田作物蒸腾与棵间土壤蒸发模拟计算方法研究

本文依据能量平衡原理和质量守恒定律，提出了作物蒸腾与棵间土壤蒸发的估算模式，并对参数的估算做了详细的分析和讨论。最后利用试验区实测资料，通过田间水热耦合运移的数值模拟，对夏玉米田作物蒸腾棵间土壤蒸发模型及其模拟计算方法进行了验证，结果表明，本文提出的模型和模拟计算方法是有效而实用的。

STUDY ON ESTIMATION OF CROP TRANSPIRATION AND SOIL EVAPORATION IN SUMMER CORN FIELD

Based on the principles of energy balance and mass conservation,the estimating models of crop transpiration and soil evaporation are described,and a detailed analysis of parameters in the models is made and the calculation of these parameters is given.Finally,the models and estimating method of orop transpiration and soil evaporation in summer corn field are tested with the data measured in experimental station by the numerical modelling of water and heat coupling movement in field.the results show that the models and calculated methods presented in this paper are practicable and efficient.