【摘要】 利用五道沟水文实验站62套原状土蒸渗仪1991～2015年长系列实验资料,采用非线性拟合方法,模拟了砂姜黑土和黄潮土冬小麦和夏大豆各生育期潜水蒸发随埋深变化的规律。通过多种线型拟合,砂姜黑土两种作物潜水蒸发量随埋深的增大而递减,均呈指数函数关系;黄潮土小麦在返青前和大豆出苗-分枝期,潜水蒸发量随埋深的增大而递减,呈指数函数关系,小麦返青期以后和大豆分枝期后,潜水蒸发量在0.5～0.8m埋深区间达到最大值,在0.5～0.8m区间以浅随埋深增大而增大,在0.5～0.8m区间以深随埋深增大而减小,呈复合函数关系。更多还原

【Abstract】 Using the long-range experimental data of 62 sets of undisturbed soil lysimeters at the Wudaogou hydrology experimental station from 1991 to 2015,nonlinear fitting methods were used to reveal the phreatic evaporation with burying depth in lime concretion black soil and yellow moist soil winter wheat and summer soybean in each growth period.The variation pattern of the variation is that the plunge evaporation of the two crops in the lime concretion black soil area decreases with the increase of the buried depth through a variety of line type fittings,and both show an exponential function.The wheat in the yellow moist soil area before turning green and the soybean emergence-branching period,the phreatic evaporation declines with the inciease of the buried depth,which is a function of the exponential function.After the turning green of the wheat and after the soybean branching period,the phreatic evaporation reaches the maximum value in the 0.5-0.8 m buried depth interval,and increases with shallower burial depth in the 0.5-0.8 m interval,and decreases with increasing depth and depth in the 0.5-0.8 m interval,showing an complex functional relationship.To provide a scientific basis for further understanding the rules of the evaporation of the crop in different growth stages.更多还原