irrigation district reform is a complex large_sized system involving problems of management system, law, policy, economy and society.
灌区改革是一个复杂的大系统，涉及管理体制、法律、政策、经济、社会等许多问题。
irrigation district modernization is the comprehensive embodiment of social modernization and water conservancy modernization, and it is a long and complicated process.
灌区现代化是社会现代化和水利现代化的综合体现，是一个复杂的长期过程。
along with the development of the zoology and water saving irrigation, the evaluation of the non-point pollution degree in irrigation district has become more and more important.
随着灌区生态节水建设的发展，灌区的面源污染程度的确定也越来越重要。
sangganhe irrigation district on the upper reaches of yongdinghe river is one of large-scale artesian irrigation districts in shanxi province.
永定河上游桑干河灌区是山西省大型自流灌区之一。
the crops planting scale in the irrigation district is usually determined according to the agriculture general programming, the crops planting and cultivation custom.
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。
therefore, develop of management information system for irrigation district is important measure which promotes irrigation district of our country with modernized and standardized management.
因此，研制开发灌区管理信息系统，是推动我国灌区管理工作现代化和规范化的重要措施。
water resources systems of irrigation district are composed with surface water system and groundwater system.
灌区水资源系统由地表水系统与地下水系统构成。
irrigation district water-measuring is the important method and guarantee of practising using water planly, assignment accurately, using irrigation water equably and meterage.
灌区量水，是实行计划用水、正确分配、合理使用灌溉水的重要手段，是实行计量收费的重要保证。
the results showed that the reference crop evapotranspiration in hunpu irrigation district increased first and then decreased gradually.
结果表明，在生育期内浑蒲灌区参考作物需水量的变化规律表现为先增大后逐渐减小。
irrigation modernization aims at providing high-quality water supply services by the irrigation district to farmers.
灌溉现代化的主旨是灌区要为农民提供优质的供水服务。
according to the irrigation realtime forecasting principle and the dynamic water distribution method for canal system, and against the background of the huoquan irrigation district in shanxi province;
根据实时灌溉预报原理和渠系动态配水的方法，以山西省霍泉灌区为背景，运用计算机决策支持系统预测作物短期需水和土壤水分状况，进行渠道配水的动态模拟。
this paper takes the bojili irrigation district (bid) as an example to study crop water requirements and irrigation scheduling for improvement of water management at both levels.
本文以山东簸箕李灌区为例，研究引黄灌区的作物需水量和灌溉制度，为改进灌区和流域水管理提供科学依据。
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.
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。
the irrigation district needs to take water-saving and increase ability of water supply and to make drought defying and reduction disaster measure of 50-60 days.
灌区必须大力开展节水和增加调蓄能力工作，并制定50～60日干旱缺水的抗旱减灾措施。
phenomena of engineering aging, benefit reduction, lack of management funds in irrigation district management units, and difficult to develop are very common in the irrigation districts in china.
指出我国灌区普遍存在工程老化、效益递减、灌区管理单位经费短缺、发展困难等现象。
the management system of canal system structures in yangling irrigation district was constructed based on vr-gis in this paper.
应用结果表明基于vr-gis技术的系统能满足灌区渠系建筑物的信息化管理要求。
this paper discussed the unsaturated soil water diffusivity and its effect factors in waste water irrigation district in beijing.
对北京市污灌区非饱和土壤水扩散率及其影响因素进行了研究。