现有的根系吸水模型大致可以分为微观模型和宏观模型。
The current root water uptake models can be divided into the microscopic model and the macroscopic model.
同时建立了基于BP神经网络的油料向日葵根系吸水模型。
And established the root uptake water model based on BP Neural Network in saline soil.
综述了作物根系吸水模型的研究现状、存在问题和研究展望。
The study status, the existing problems and the research in the future for the crop root water uptake models were summarized in this paper.
建立了由田间实测土壤水分动态资料反求的冬小麦根系吸水模型；
Set up the wheat root water uptake model with the field experiment data of soil moisture;
结果表明：第二种方法建立的苹果树根系吸水模型的模拟精度略高于第一种方法。
The results showed: the simulation accuracy of the apple tree root water uptake model established by the second method is slightly higher than the model established by the first method.
根系吸水模型的准确性在一定程度上依赖于根系吸水速率与根长密度关系的研究。
The accuracy of root-uptake-water model depends on the relationship of root-water-uptake rate and root length density to a certain extent.
在土壤-作物系统中，根系吸水模型是连接土壤和作物的桥梁，然而又是最难处理的一个环节。
In soil-plant system, linear root water uptake model is a linkage between soil and plant.
宏观根系吸水模型的边界条件容易确定和控制，但该类模型忽略了根系微域的水势梯度和其他类似现象。
The boundary conditions were easily determined and controlled by the macroscopic models, while the gradient of water stress in the micro-zones of roots was ignored.
将几个影响根系吸水的因素综合起来考虑，用线性方程进行描述，建立根系吸水模型，是近些年来出现的一个较为简捷的新途径。
One of the most research methods used in recent years is to use linear equation to describe several factors comprehensively and set up root water uptake model.
该文根据达西定律和裘布衣假定，把树木根系近似看作为倒圆锥体，建立了树木根系吸水模型，并以油松为例对模型进行了验证。
According to Darcy-theory and Dupuit-hypothesis, the roots of tree were approximately considered as an upside-down circular cone, and then plant root water uptake model was established.
该模型除能预报根系吸水的一些水分动态和水势动态外，还能预报有效根密度的时空变化。
The model can predict not only the soil water dynamic profiles and the soil water potential profiles, but the changes of the effective root density with depth and time.
由理论分析和计算，得到了较为切合实际的二维根系吸水率模型。
Through theoretical analysis and numerical computation, a two dimensional root water uptake model then was developed. Results of case st...
模拟结果表明，两模型基本能够正确反映冬小麦根系吸水的实际状况，满足生产要求。
The simulation results showed that both the two models could reflect the actual situation of root-water-uptake of winter wheat, and could meet then…
模拟结果表明，两模型基本能够正确反映冬小麦根系吸水的实际状况，满足生产要求。
The simulation results showed that both the two models could reflect the actual situation of root-water-uptake of winter wheat, and could meet then…
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