Spatial variability of soil water retention function is a primary prerequisite for quantitative research on water movement and solution transfer in unsaturated zone.
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。
The key factors causing soil dried layers are great thickness and depth of membrane water zone under ground as well as small thickness of gravity water zone.
由降水少量决定的、埋藏深度小而厚度大的薄膜水带的存在是引起土壤干层发育的直接作用的因素。
So we should designate sanitary zone of water source, control soil and water loss and non - point source pollution to protect water source.
建议采取划定水源保护区、加大水土流失治理力度、控制面源污染等措施保护水源。
The study shows that the main factors of effect on the Se effectiveness in the zone are probably water, soil loss and soil absorption (clay particles and minerals).
结果表明，水土流失和土壤吸附（含粘粒、矿物质等）可能是本研究地区影响硒有效性的主要因素。
Based on its soil and water loss and treatment characteristic, the monitoring technology of linear zone development and construction project was elaborated from its content, object, item and method.
针对线形开发建设项目的水土流失与治理特点，从监测内容、对象到监测项目和方法，对线形开发建设项目水土保持监测技术进行了详细地阐述。
Evapotranspiration, yield, production value, and soil moisture in root zone for 30 kinds of intercropping systems under different irrigation water application were studied in this paper.
对30余种间作套种组合种植作物的耗水量、产量、产值及其根区土壤含水量进行了分析研究。
Along the gradient zone of ecotone between oasis and desert, 3 zones can be divided clearly by the change of soil water content.
在绿洲至流动沙丘这一环境梯度带，其水分变化可以明显划分为3个区间。
On the basis of the experimental data in farmland, a function relationship between the potential evapotranspiration and the relative water content of the soil in the root zone was established.
以田间实验资料为基础，建立农田蒸散量和土壤相对含水量与潜在蒸散的函数关系。
Due to its strong consumption of soil water, soil desiccation and grassland degradation happened quite frequently at this zone.
苜蓿具有强烈的耗水性能，导致半湿润区苜蓿草地发生干燥化，草地退化较为严重。
The eco-tone between oasis and desert is a important zone for vegetation restoration. The key for vegetation restoration is to know the soil water content of dune.
绿洲-漠交错带是植被恢复的一个重要区域，而植被恢复的关键又是了解沙丘土壤水分的变化规律。
The paper introduces seven factor of DRASTIC model: Depth of water table, Net recharge, Aquifer media, Soil media, Topography, Impact of Vadose Zone and Hydraulic Conductivity.
前言：介绍了DR AST IC模型的七个评价因子：地下水埋深、含水层净补给量、含水层介质类型、土壤类型、地形坡度、包气带介质i的影响和含水层的导水系数。
The slope erosion is the original zone of water and soil loss and water and soil on slope must be treated quickly.
坡面侵蚀是水土流失的源区，有必要加快坡面水土治理。
Soil water-holding agent is one kind of new chemical drought-resistant materials. They are widely used in the agricultural production and afforestation in arid zone.
土壤保水剂是一种新型化学农业抗旱材料，在干旱地区农林业生产中具有广泛的应用前景。
In the condition of spring irrigation and concentrated rainfall, the soil desalinized in root zone, and the accumulated salt due to saline water irrigation can be leached;
在春季河灌和汛期集中降雨淋洗的条件下 ，作物根层土壤不积盐 ；
The cadmium contents of the water-level-fluctuating zone soil of the Three-Gorges reservoirs area in the Yangtse river main stream and its branch-Xiaojiang river are reported.
报道了三峡库区长江干流及小江支流消落带土壤中重金属镉含量背景值调查结果。
Tarim irrigation area is located in the warm-temperature zone with plenty of light, heat, soil and water resources which are favorable conditions for the development of agriculture.
本文根据土地生产潜力和人口承载力计算模型 ，确定在不同生活水平要求下塔里木灌区适当的人口规模 ，为塔里木灌区农业资源的合理适度开发提供参考依据。
Tarim irrigation area is located in the warm-temperature zone with plenty of light, heat, soil and water resources which are favorable conditions for the development of agriculture.
本文根据土地生产潜力和人口承载力计算模型 ，确定在不同生活水平要求下塔里木灌区适当的人口规模 ，为塔里木灌区农业资源的合理适度开发提供参考依据。
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