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The actual water requirements differ according to plant, climate (most of the water withdrawn by plants is for cooling through evaporation) and the efficiency of irrigation.
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.
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.
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.
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.
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.
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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