根据收集到的资料，计算得出全国主要作物的净灌溉需水量。
Based on the data collected in this study, net irrigation water requirement of main crop in china has been gotten.
许多人试图通过减少灌溉频率或改种需水量更少的作物来节约用水。
Many have been attempting to conserve water by irrigating less frequently or by switching to crops that require less water.
实际的需水量根据植物种类，气候(植物吸收的大部分水用于进行蒸发降温)，和灌溉效率的不同而有所不同。
The actual water requirements differ according to plant, climate (most of the water withdrawn by plants is for cooling through evaporation) and the efficiency of irrigation.
在对灌区来水和需水随机性分析的基础上，建立了一种确定灌区灌溉用水保证率的计算模型。
A calculation model is established in the paper for determining the water use ensurance probability based on the statistic analysis of irrigation area inflow and water needed.
实践证明，根据水稻需水的规律进行科学灌溉，不仅可以大量节水，而且还能增产，社会效益和经济效益都十分显著。
The practice has proved that the scientific irrigation based on rice water requirement rule can save water and increase yield and gain significant social and economic benefits as well.
根据各种花卉栽培方式以及花卉的需水规律，应用可编程控制器自身的特点，对花卉进行合理的、有效的自动灌溉系统设计。
The automatic irrigation system is designed chiefly according to various cultivating methods, the water need regulation of flowers as well as the characteristics of programmable logical controller.
分析了现有作物需水量测定方法与计算方法在我国应用于灌溉预报时的局限性。
The present measuring and computing methods of crop water requirements have some limitations when they applied to irrigation prediction in China.
根据田间试验对宁夏引黄灌区水稻需水规律及节水灌溉条件下水稻田水分利用效率开展研究。
Study of water-demand regulations and water use efficiencies under condition of different irrigation systems of rice were carried out by serial field-scale experiments.
为此，本文在监测系统的基础上扩展了系统功能，建立了基于植物生理需水信息的温室滴灌自动控制系统，并进行了灌溉控制效果实验。
So, a real-time irrigation control system based on plant physiological water needing information was established, and the effect experiment of irrigation control was made.
针对丘陵地区经济作物节水关键技术及设备研制课题需要解决需水信息采集和作物的灌溉模型的问题。
According to hilly areas of economic crops for water-saving technologies and equipment Research, which need to get water demanding information and crop irrigation model.
他还表示，因为果树需水量太大，农民不能利用雨水灌溉。
He said farmers could not irrigate using rain water as the trees needed large amounts of water.
将优选出的模型应用于疏勒河灌区的作物需水量预测，为灌区作物灌溉提供指导。
The optimized model is applied to predict the crop water requirements of Shulehe irrigation area to provide guidance for crop irrigation in the irrigation area.
利用桶栽试验，研究了在不同灌溉方式及不同蒸发渗漏处理下的水稻需水量和对水稻生长的影响。
The water requirement and growth in paddy rice were studied under four different irrigation methods and different evaporation and seepage with pot culture.
修补漏水以及在贫困的国家更好的灌溉庄稼能帮助减少多达70%的消耗量，在干旱地区种植需水量少的庄稼同样可以减少水的消耗。
Repairing leaks and better irrigation in poor countries could help reduce wastage by up to 70%, as could switching to less thirsty crops in arid regions.
作物需水量估算是实施农业灌溉管理的重要环节之一。
To estimate crop water requirements is one important part of agricultural irrigation management.
要进行科学、高效的灌溉管理，必须准确地计算和预测作物需水量。
In order to carry through scientific and efficient irrigation management, crop water requirements must be calculated and forecasted accurately.
实例表明，优化调度方案相应的理论发电效益显著，灌溉和城镇需水要求基本能满足。
An example indicated that the corresponding theory of electricity benefit is remarkable from the optimal dispatching plan, and the demands of irrigation and water supply for city are satisfied.
比较不同灌溉条件下的农业需水量变化发现在农业灌溉中采用经济灌溉方式将有利于缓减未来农业供需水不足的矛盾。
These results show that economical irrigation mode will be usefull to alleviate the contradiction between agricultural water demand and water supply.
作物需水量的掌握不但是水资源规划利用的重要因子，更是拟定灌溉计划的依据。
Crop water requirement is not only an important factor for water resource management, but also a major reference for the irrigation planning.
通过天然林草需水量分析，提出该地区适宜的林草植被保护技术，包括围栏封育、根据草场的载畜能力确定载畜量、合理灌溉、加强抚育管理。
According to analysis of water demand of natural forest and grass, technologies of forest and grass protection that suit the local conditions are pointed out, including enclosed-fence f...
分析了现有作物需水量测定方法与计算方法在我国应用于灌溉预报时的局限性。
Research advance for the real-time irrigation technology based on the crop water requirements;
分析了现有作物需水量测定方法与计算方法在我国应用于灌溉预报时的局限性。
Research advance for the real-time irrigation technology based on the crop water requirements;
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