低坝是灌区引水灌溉普遍采用的一种形式。
Low dam is a diversion irrigating method adopted generally in irrigated area.
灌区水资源系统由地表水系统与地下水系统构成。
Water resources systems of irrigation district are composed with surface water system and groundwater system.
确定轮灌区面积是沙丘地灌溉设计中最重要的问题。
Determining the area of irrigation rotation is a key problem in irrigation design on sand dune.
该研究结果为灌区地下微咸水的合理开发利用提供了依据。
The study supplies a basis for reasonable exploitation and utilization of underground slight saline water irrigation.
针对灌区用水计量模糊问题，开发了一种新型明渠流量仪。
Aiming at the problem of inaccurate water measurement in irrigation, we design a new open channel flowmeter.
开发了通用性强、界面友好、操作简单的灌区用水管理系统。
Developed the irrigation water management system that is strong for currency use, friendship for interface and simple operation.
灌溉也没用：气候变化对人工灌溉区比雨水浇灌区的打击更大。
Irrigation may not help: climate change will hit irrigated systems harder than rain-fed ones.
总结分析了灌区水盐动态变化趋势，计算并提出了排水控制标准。
The water salt trends in irrigated area is analysed and the standard of drained off water control is put forward.
就宁夏引黄灌区而言，气候变暖对水稻单产的贡献为2.51%。
In irrigation area of Ningxia, the contribution of climate warming to rice yield was 2.51%.
阐述了密山灌区选择具有代表性的田块进行水田典型区设计的步骤与方法。
This paper discusses the representative field selected to be designed as typical paddy field area by Mishan Irrigation Area.
在灌区内土壤盐分随灌溉和排水而呈现季节性变化，但整体上处于脱盐状态。
In the irrigated areas, the soil salinity changes seasonally and decreases as a whole along with the process of irrigation and drainage.
灌区作物种植比例通常是根据农业总体区划、作物种植习惯和耕作习惯确定的。
The crops planting scale in the irrigation district is usually determined according to the agriculture general programming, the crops planting and cultivation custom.
而提高沟排水中地下水排泄量的比例是加快灌区脱盐和盐渍土改良的重要途径。
Increasing groundwater portion of ditch drainage water is an important way to speed up desalination and salted soil improvement in irrigation areas.
对于平原灌区，研究利用以淹没出流为主的工作闸门进行渠道量水具有现实意义。
It has realistic significance to research on using working gate with submerged discharge to measure water in canal for slab irrigation district.
灌区盐分平衡状态的分析与计算是灌区工程环境影响评价工作中的重要内容之一。
The analyses and calculation of salinity balance are very important contents of environmental impact assessment of irrigation project.
但灌区内存在着大量未开发的浅层咸水资源，这部分水资源属于劣质高矿化度水。
However, there are lots of undeveloped shallow salt water resource in the region that are high mineralized water with poor quality.
灌区灌溉设计中，常用降雨量进行频率分析来选取灌溉设计保证率及其对应典型年。
Rainfall frequency analysis is used commonly to determine probability of irrigation water requirement, and to choose typical years for irrigation project design.
应用灰色关联度分析方法综合评价了宁夏扬黄灌区玉米品比试验的15个参试组合。
The grey relational degree analysis has been used to evaluate the 15 tested maize combinations in Yanghuang irrigation area of Ningxia province.
大兴农田水利，全面加强大中型灌区、泵站和小型农田水利设施建设，从根本上提高抗旱能力。
In order to fundamentally improve the drought resistance, large scale and medium-sized irrigation system, pumping stations and small irrigation and water conservancy facilities must be scaled.3.
井灌区地下水主要靠地表水、降雨和潜流补给，平原井灌区主要靠地表水和降雨补给。
The surface water, precipitation and undercurrent are main to the groundwater in well irrigated area while in plain area surface water and rainfall are main replenishment.
针对灌区工程建设和运行管理中出现的一系列环境问题，提出了灌区治理与改造的措施。
Aimed at a series of environmental problems in the construction and operation management in the irrigation district projects, the counter-measures of treatment and rehabilitation are proposed.
农业灌溉耗水研究是流域水文模拟与水资源评价、灌区规划与灌溉水管理的基础研究工作。
Evaluation of irrigation water consumption is the basal work for hydrological simulation, water resources assessment, irrigation planning, and irrigation water management in a basin.
用GC -ECD定量测定了乌鲁木齐市水磨河底泥及污灌区土壤中有机氯农药的含量。
Organochlorine pesticides (OCPs) in sediments and sewage irrigated area soils from Urumqi Shuimohe river were determined by means of GC-ECD.
用静态平面和动态空间两种模型对灌区水资源利用系数进行了理论和实践的综合分析研究。
Comprehensive analysis and research on the theory and practice of water use efficiency in irrigation district is conducted by using static plane and dynamic space models.
通过在河套灌区各旗县的区域试验，为在北方内陆盐渍化地区大面积种植提供了科学依据。
Regional experiments in each county of Hetao provide scientific basis for large area planting in the North landlocked saline-alkali area.
为使灌区的用水管理由经验定性决策向科学定量决策过渡，研制了位山灌区配水调度模型。
The water distribution operation model is developed aim to make a transform of Weishan irrigation water management decision making from experimentally qualitative to scientifically quantitative.
灌区盐碱土以全盐量大于0.3％的中度以上盐碱土分布较广，占灌区面积的77.7％。
Saline soil with salt content greater than 0.3% is widely distributed and accounts for 77.7% of the total irrigated area.
灌区盐碱土以全盐量大于0.3％的中度以上盐碱土分布较广，占灌区面积的77.7％。
Saline soil with salt content greater than 0.3% is widely distributed and accounts for 77.7% of the total irrigated area.
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