The development of water - saving agriculture is one of mast effective methods in the shortage of water resource with water resource deficiency becoming a world problem 摘要水资源紧缺已成为世界性问题，农业用水消耗水资源的70 %之多，与此同时，农业用水中的水浪费现象还普遍存在，因此，节水农业是解决缺水问题的唯一途径。
Even when you are able to develop an efficient initial design , it may be necessary to make modifications to your applications and or databases as volumes increase , or as system resources become constrained 即使您可以开发一个有效的初期设计，随着数据量的增加，或者在系统资源紧缺的时候，也仍有必要对应用程序和/或数据库作出修改。
The application of emulational software to the teaching of the electrical engineering major plays an active role in overcoming the shortage of teaching materials , arousing students ' interest in study and improving the effect of classroom teaching 仿真软件在电专业教学中的应用，对克服教学资源紧缺、激发学生的学习兴趣、提高课堂教学效果起着积极的作用。
Because the resource of embedded system is limited , we provide a high - efficient design of multi series port equipments managed by a single interrupt in order to save a lot of resource and improve communication efficiency of series port 基于嵌入式系统的资源紧缺特性，提出了高效率利用单一中断源管理多个串口设备的设计构思，大大节省了资源，提高了串口通信效率。
Due to increasing acceleration of both economic development and population growth , water consumption and requirement have increased greatly since the 1980s , and water shortage in northern china has become a major factor constraining economic and social development 摘要随著社会、经济和人口的发展，需水量不断增加，中国北方地区水资源紧缺严重地限制社会和经济的发展。
And nearly 80 percent are well irrigation . the homeostasis of groundwater resources has been destroyed because of exploiting by human without plan . more and more pumps ca n ' t work and the appearance of funnel has been arisen 无节制、无计划人为超采地下水，致使地下水动态平衡遭到破坏、每年出现大量的“吊泵”和“漏斗”现象，地下水资源紧缺已成为其今后发展的制约因素。
Results : there are 7 species 1 variety menispermaceae plants in anhui , of which the resoures of stephania tetrandra is in short supply , carrying out the studies on nantural cultivation of stephania tetrandra that is an efficient way to utilizing the resoures 结果：安徽省防己科药用植物资源共有5属7种1变种，其中粉防己资源紧缺，人工半野生抚育是延续粉防己资源利用的有效途径。
In order to solve the problems of irrigation ditch building in ningxia area , the paper explained : ningxia lacks of water resource and it is vital to save water ; the building of irrigation ditch linings is a major water - saving measure ; there are several major types of ditch linings 摘要为解决好宁夏地区渠道衬砌，阐述了：宁夏水资源紧缺，节约用水势在必行；渠道衬砌是一项主要节水措施；渠道衬砌的主要类型。
On the base of discussing the connotation and application methods of water resource demand side management ( dsm ) , and aiming at the prominent contradiction between water resource scarcity and lower water utilization efficiency , it is analyzed that the necessity of applying dsm in the yellow river basin 摘要在对水资源需求管理的内涵和实施手段进行探讨的基础上，针对目前黄河流域水资源紧缺与用水效率低下的突出矛盾，分析了黄河流域实施需求管理的必要性。
Based on mentioned above , as example , the topic 3 selects weidian irrigation area in the south and chengbei irrgation area in the north in huaibei plain , and the maths models have been established with maximal net benefit of annual irrigation as objective according to the method of linear planning of system engineering 以位于淮北平原中南部韦店灌区和北部亳州城北灌区为实例，根据该区农业资源特点、水资源紧缺状况，种植条件、灌排工程现状，采用线性规划方法，建立了两个典型灌区水资源优化配置数学模型。
