研究黄土高原土壤水分变化规律，有着极其重要的科学和实际意义。
That has practical and scientific significance to study the dynamic law of soil moisture.
徐炳成山仑李凤民，苜蓿与沙打旺苗期生长和水分利用对土壤水分变化的反应。
Responses of Medicago sativa and Astragalus adsurgens seedlings growth and water use to soil moisture regime.
基于土壤水分变化率与贮水量成正比这一假定，得出了土壤水分的指数消退关系。
Based on an assumption that the depletion of soil water is proportional to soil water storage, the exponential depletion relation of soil water is obtained.
以辽宁省主要旱地作物玉米为研究对象，研究了其灌溉田土壤水分变化及其耗水规律。
We have studied the change law of soil moisture and evapotranspiration in irrigated farmland of corn which is the principal crop of dry farmland in Liaoning province.
丘间低地土壤水分变化特征表现为：水分变化频繁活动层，水分潜在供应层，水分相对稳定层。
The changing features of the soil water in the lowland around by sand dune are: the frequent changing layer, the potential supplying layer and the relatively stable layer.
利用定位观测数据，对四川中部丘陵地区不同种植模式下旱地土壤水分变化规律进行了初步研究。
Based on the data of observation in fixed location, the pilot study on the law of soil moisture variation in different cropping patterns on dryland in hilly area of Central Sichuan has been done.
以淳化试区的水平梯田为系统研究对象，休闲坡地为对照，对其剖面土壤水分变化进行动态监测。
Level terrace in Chunhua was the system studied object, fallow sloping field was the check, and their soil moisture variety was dynamic monitored.
针对目前灌区灌溉预报存在的问题，考虑灌区土壤水分和影响土壤水分变化的因子的空间变异性以及预报的实时性，提出了灌区实时灌溉预报模型。
The real time irrigation forecasting method and models were presented and the parameters in these models were calibrated based on data investigated in Doushan Irrigation Scheme.
田间土壤水分、盐分和温度变化使水、盐、热耦合迁移的过程极其复杂。
The variation of soil water, salinity and temperature in the field makes the coupled transport processes of them very complicated.
以不覆盖的处理为对照，研究了冬小麦期覆盖秸秆对夏玉米土壤水分动态变化及产量的影响。
Taking bare surface as CK, this paper discussed effect of straw-mulch during wheat stage on soil water dynamic changes and yield of summer maize.
试验在池栽条件下研究了滴灌与垄沟耕作条件下冬小麦田间土壤水分的动态变化。
An experiment was carried out to study changes in soil moisture in winter wheat field under the conditions of drip irrigation, furrow and ridge planting.
植物根系对土壤水分动态变化影响明显。
Root system of vegetation clearly influence the trends change of soil water.
气候影响冻土的融化，直接导致土壤水分的变化。
The change of the climate makes frozen soil thawing to increase the soil water.
依据定位观测数据，对紫色土丘陵区农用地土壤水分的动态变化规律进行了初步研究。
Based on the data of observation in fixed location, the pilot study on soil moisture dynamic variation law of farmland in purple soil hilly region has been done.
本文简要介绍林地土壤水分的入渗性、植被对土壤水分的影响，以及林地土壤水分的季节和垂直变化规律。
This treatise briefly introduces the forest soil moisture's infiltrating quality, the vegetation's effect on soil moisture and the forest soil moisture's seasonal and vertical change rules.
还利用建立的模型，模拟了2080年的气候条件变化对潜在蒸散量和土壤水分含量的影响。
The impacts of climate on potential evapotranspiration and soil water content under 2080's climatic condition were simulated with the model.
试验结果表明，土壤水分显著影响了小麦的光合蒸腾日变化动态。
The research results reveal that the soil moisture prominently impacts the daily variation kinesis of transpiration rate and the daily net photosynthetic rate of wheat leaves.
下部土壤含水率等值线分布由底部向上都呈递增趋势，表明本次试验土壤水分动态变化不受地下水位的影响。
The distributing trend of soil moisture contour map in under soil is rising up from bottom to surface, which indicates that ground water level has no influence on soil moisture variation.
采用定位取样法研究了陕蒙沙漠高速公路路堤和路堑边坡土壤水分的季节变化。
Soil moisture content and its dynamics on road embankment and cutting slope at fixed points were investigated on shaanxi-inner Mongolia desert expressway.
研究了甘肃黑河地区麦田土壤水分的变化动态。
The laws of soil moisture variations on the state of evapotranspiration in Heihe areas has studied.
土壤水分是连接气候变化和植被覆盖动态的关键因子。
Soil moisture is the key factor, which connects climate with vegetation change.
主要研究成果如下： （1）不同树种光合生理过程日变化规律不同树木光合生理过程日变化规律即与树种特性有关也与土壤水分密切相关。
The next are the main results: (1)The diurnal change rule of the process of photosynthetic physiological of different trees has the connection with the characteristics of trees and soil moisture.
覆盖草帘较覆盖地膜处理土壤水分含量高，变化幅度小。
Soil water content with straw mulch was higher than polythene, the range of changes is small.
结果表明：水稻叶气温差在不同的土壤水分条件下表现出不同的日变化规律，较低的土壤水分导致了较高的叶气温差；
The results show that the diurnal variation of leaf-air temperature difference varies under different soil moisture conditions, the low soil moisture results in large leaf-air temperature difference.
不同植被覆盖度下冻土活动层的土壤水分分布及变化过程存在差异。
There is much difference of the soil moisture's spatial distribution and change processing under different vegetation coverage.
通过分析地膜覆盖后土壤水分平衡的变化特点，建立了地膜覆盖前后农田土壤湿度变化的模拟方程。
The simulating models about the change of soil water content under plastic mulch were established by analysing the changes of soil water balance after mulching.
本文研究了砒砂岩地区沙棘人工林地土壤水分物理性质及其变化规律。
The soil hydro-physical properties of artificial seabuckthorn woodland had been studied in arsenic sandstone areas.
土壤水分周年变化有明显的阶段性，有利于小麦生长，旱塬小麦耗水系数高，水分利用效率低。
The yearly variation of soil and water is obviously characterized by stages, which is favourable for wheat growth.
土壤水分平衡模型在洪水预测、土壤湿度计算、灌溉设计管理以及全球气候变化影响的仿真分析上十分重要。
Soil water balance models are especially important in the prediction of flood runoff, calculation of soil moisture content, design and management of irrigation and simulation of climate impact.
土壤水分平衡模型在洪水预测、土壤湿度计算、灌溉设计管理以及全球气候变化影响的仿真分析上十分重要。
Soil water balance models are especially important in the prediction of flood runoff, calculation of soil moisture content, design and management of irrigation and simulation of climate impact.
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