土壤水分特征曲线是土壤水分运动研究必不可少的环节之一。
The water retention curve is one of the essential links to study the soil water movement.
研究了湖北省郧县石渣土三种不同土石比土壤水分运动特性。
The water characteristics of the lithosols with three different soil gravel ratios were studied.
而就灌溉后土壤水分运动而言，垄作与沟播处理快于畦播处理。
As for soil water movement after irrigation, it was faster in the ridge planting and furrow planting treatments than in the flatten culture treatments.
这样，一次试验可以同时测得非饱和土壤水分运动的全部参数。
Therefore, all parameters concerning the movement of unsaturated soil water may be determined at the sa-me …
非饱和土壤水分运动参数的空间变异规律是大区域参数估计的基础。
Spatial variation pattern of water movement parameters in unsaturated soil is the base of parameter estimation in a large area.
LEACHC是描述土壤水分运动、溶质运移和盐分积累的盐度模型。
LEACHC is the salinity model describing water flow, solute movement and salt accumulation in soil profiles.
说明利用该数学模型研究蓄水坑灌条件下的土壤水分运动状况是可行的。
It indicates that to research on soil moisture movement under the condition of water storage pit irrigation by using this model is feasible.
利用蓄水单坑土壤水分运动试验装置结合负压计进行蓄水单坑灌水试验。
By using the experimental device of soil moisture movement of single water storage pit and suction gauge, irrigation experiment of single water storage pit are conducted.
介绍了土壤水分运动规律研究方法及内容，探讨了需要进一步研究的问题。
This paper introduces the research method and contents of the law of soil water movement, and probes into some problems needing future research.
非饱和土壤水分扩散率是研究土壤水分运动规律必不可少的基本参数之一。
Unsaturated soil water diffusivity is a necessarily basal parameter to study soil water movement laws and quantificationally analyze soil water movement with method of mathematical simulation.
这一研究成果为进一步研究蓄水坑灌条件下的变水头入渗及土壤水分运动特性奠定基础。
The research results will have an important value for to study further varying-head infiltration and soil moisture characteristic of water storage pit irrigation.
运用SWAP模型对太行山山前平原——河北省栾城县田间土壤水分运动进行了数值模拟。
The article is based on SWAP model and did numerical simulation for water movement in the soil of farmland in the piedmont plain of the Taihang Mountains, Luancheng County in Hebei province.
对局部控水灌溉（无压地下灌溉）技术从理论上进行了分析，并给出了其土壤水分运动方程。
Theoretical analysis of local-control irrigation, i. e. , non-pressure underground irrigation, is conducted, and soil water movement equation is presented.
这一研究成果对进一步研究蓄水坑灌条件下的变水头入渗及土壤水分运动特性具有重要价值。
The research results will have an important value for studying further varying-head infiltration and soil moisture characteristic of water storage pit irrigation.
这一研究成果对蓄水坑灌条件下的变水头入渗及土壤水分运动特性的进一步研究具有重要价值。
The research results have an important value for further study of varying-head infiltration and soil moisture characteristic of water storage pit irrigation.
土壤水动力学参数的推导和土壤水分运移分布的数值模拟是研究土壤水分运动规律的重要部分。
Derivation soil hydrodynamic parameter and numerical simulation of soil water movement and distribution are important parts of soil water movement research.
论述了国内外在土壤水分入渗方程模拟、土壤水分运动参数和SPAC理论等方面的研究进展。
The research at home and abroad on the simulation of soil water infiltration equation soil water movement parameters and the theory of SPAC were reviewed.
说明所建立的数学模型能够反映蓄水坑灌条件下的土壤水分运动状况，其数值求解方法也是可行的。
It indicates that the numerical modeling can reflect the status of soil moisture movement under the condition of water storage pit irrigation, and its method of solution is feasible.
此研究为盐渍化地区土壤水分运动的研究提供了依据，是盐渍化地区SPAC系统研究的基础。
This study offers the theoretical basis for researching the soil water movement, and it is the basis of researching the SPAC system in saline soil.
通过对节水灌溉新技术——吸灌技术机理的研究，建立了吸灌条件下的土层土壤水分运动数学模型。
Based on the research of a new irrigation technique-sucking irrigation method, the numerical simulation is made for the water motion in soil layer under sucking irrigation condition.
根据非饱和土壤水运动理论，建立了地埋滴灌条件下土壤水分运动的数学模型，用有限差分法对模型求解。
The rules of the soil-water movement are the base of the development and using for every irrigation technique.
根据土管成因不同将其分为四种类型，即土壤动物活动导致的土管、植物根系形成的土管、土壤裂隙形成的土管和土壤水分运动形成的土管。
The pipes can be divided into four kinds based on their cause of formation, namely pipes formed by the animals, by the roots of plants, by the cracks of soil and by the soil water movement.
本文认为非饱和土壤水分运动的数值模拟虽然取得了一些进展，但对土壤水分运动较为复杂的情况仍然手段有限，该领域的研究工作有待继续深化。
We consider that the numerical simulation of the movement of unsaturated soil-water has made a mighty advance, but there are limited means in the complex instance. The research of this field...
田间条件测定土壤水势改以往普通负压式水银张力计一点测定为改进后负压式复合张力计两点测定，并能直接反映田间两点水势差异情况，判断田间土壤水分运动趋势。
The flow of soil water was determined in field by two sites replaced one site, the result can directly show difference between two assaying sites, and judge trend of soil water movement.
土壤水分特征函数空间异质性是定量研究土壤非饱和带水分运动以及溶质运移的先决条件。
Spatial variability of soil water retention function is a primary prerequisite for quantitative research on water movement and solution transfer in unsaturated zone.
在此基础上建立了基于土壤孔隙形态学特征的随机网络模型，在孔隙尺度模拟了土壤中的水分运动过程，并预测了近饱和土壤水分特征曲线。
A spatially-random network model by using measured pore morphology was then set up to simulate the pore scale flow processes, and to predict the soil water retention curve near saturation.
本文简述了标定的原理、田间土壤水分特征曲线和非饱和导水率的标定方法，还给出了水分运动参数标定的实例。
In this paper, the concept and the method of scaling are described, and some examples of scaling of soil water characteristic curve and unsaturated hydraulic conductivity are given.
本文简述了标定的原理、田间土壤水分特征曲线和非饱和导水率的标定方法，还给出了水分运动参数标定的实例。
In this paper, the concept and the method of scaling are described, and some examples of scaling of soil water characteristic curve and unsaturated hydraulic conductivity are given.
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