查询词典 irrigation district

That conforms to the fact and educe that the model is reasonable and can be as the basis of the optimal water resources allocation of irrigation district

这一结果符合当地实际情况，表明所建立的大系统模型是合理的，可作为灌区水资源优化配置的依据。

The reference crop evapotranspiration(ET0) in Guanzhong region was calculated with the Penman-Monteith equation. The change characteristics of meteorological factors and ET0 over year were analyzed. The regressing relation between ET0 and geography factors was established. Space distribution of ET0 based digital elevation model was obtained. The water consumption model of main cropes was established using the crop cofficient method. The irrigation water requirement of main crop and it's space distribution based DEM under the different precipitation probability was obtained, which advanced the calculation precision of ET0 from spot scal to regional scal. The concept of water consumption under the irrigational scal was proposed. The water consumption model of different water user and model of groundwater balance based on the water consumption of Baojixia irrigation district was established. Which can refects the relation between water utilization, water consumption and change amount of groundwater resouces.

深入分析了关中地区气象要素的变化趋势，用Penman-Montainth 公式计算了参考作物蒸发蒸腾量（ET0），建立了ET0与地理要素的多元回归关系，获得了基于数字高程模型DEM的关中地区ET0的空间分布图；用作物系数法建立了关中主要作物生育期耗水模型，获得了主要作物在不同降雨条件下的灌溉需水，以及基于DEM的主要作物灌溉需水空间分布图，提高了作物蒸发蒸腾量由点到面尺度转换过程中的估算精度；界定了灌区尺度的耗水量的概念，包括用水耗水和非用水耗水，建立了灌区耗水量计算模型及基于耗水量变化的浅层地下水均衡模型，能较好地反映灌区引水量、耗水量及地下水蓄变量之间的内在关系。

Completion of the project, together with those in 2008 before the implementation of the reconstruction project, Bayannur City Hetao irrigation area of 787 hectares of existing irrigation Yellow fundamental transformation will be completed, can add 50 million mu of cultivated area ; Yellow River Irrigation District water will be reduced by 1.2 billion cubic meters, equivalent to savings of 12 large reservoirs (according to the criteria for the classification reservoir, storage capacity up to 100 million cubic meters is large reservoirs); the annual grain production capacity can add three billion kg, close to irrigation district The current annual production of 3.8 billion kg of grain, and create a "granary north of the Great Wall."

项目完成后，连同2008年以前实施的改造项目，巴彦淖尔市河套灌区现有的787万亩引黄灌溉农田将基本改造完毕，可新增种植面积50万亩；灌区引黄水量将减少12亿立方米，相当于节省出12座大型水库(按水库划分标准，库容达1亿立方米就是大型水库)；每年可新增粮食生产能力30亿斤，接近灌区目前的粮食年产量38亿斤，再造一个"塞外粮仓"。

In accordance with the prevention of soil salination and water-saving irrigation in autumn in Inner Mongolia Hetao irrigation district, the reasonable water-saving irrigation scheme in autumn was quantificationally established by using SHAW model in theory, which aimed at the different salinized soils.

根据内蒙古河套灌区秋浇节水与土壤盐渍化防治的需要，利用SHAW模型模拟确定了不同盐渍化土壤合理的秋浇节水灌溉制度。

Border irrigation is a new kind of surface irrigation technique derived from the irrigation practice in the irrigation district in northern China.

小畦灌是我国北方一些灌区从灌溉实践中摸索出来的一种新型地面灌水技术。

In the experi- ment and practice m the zhongwei North Main Canal of the Hetao Irrigation District, a cheap and quick functioned slope protection method of soil and grass mixture for tree planting has been searched for de- sign and construction of irrigation canal and drainage in the desert region.

河套灌区在中卫北干渠进行了试验，在沙漠建渠道，用人工和植物固沙，沙漠区排水沟道的设计则充分考虑水流冲刷，对沟道防坍塌摸索了一条花钱少、见效快的草上植柳护坡办法，并在灌区内植树造林以固沙。

The authors discuss the necessity and feasibility of implementing controlled drainage in Yinnan irrigation district based on present situation and put forward methods and steps about how to implement controlled drainage in Yinnan irrigation district.

根据宁夏银南灌区目前灌溉排水的现状，论证在该灌区实施控制排水的必要性和可行性，并且提出了在银南灌区如何实施控制排水的方法和步骤。

Irrigation and drainage ; irrigation district ; water metering ; water metering instrument ; irrigation management

农田水利；灌区量水；量水装置；灌溉管理

Six are a wide range of applicability and flexibility, can be used in Daejeon, economic crops, vegetables and orchards; are seven gate opening set, from the beginning to the end of irrigation, without manual operation, greatly reducing labor irrigation to improve water working conditions; are eight gates to control irrigation systems and drainage Irrigation District, full-motion can also be used as pipe to replace the fields of agricultural,毛渠,斗渠to achieve from畦沟with water, can also be used as surge irrigation water distribution pipes at the end of class .

六是具有广泛的适用性与灵活性，可用于大田、经济作物、蔬菜和果园；七是闸板开度设定后，从开始到灌水结束，无需人工操作，极大地减少灌水用工，改善灌水的工作条件；八是闸管灌溉系统可与渠灌区、也可用作全移动管道输水，替代田间农、毛渠，完成从斗渠到畦沟配水，还可用作波涌灌溉的末级配水管道。

Based on the Minqin oasis Daejeon cotton irrigation district, systems research and analysis of cotton under different irrigation water and nitrogen coupling effect, the main conclusions of the pilot study are as follows:(1) The coupling effect of water and nitrogen under different furrow irrigation patterns shows that water and nitrogen application rate increased in the three furrow irrigation patterns will help improve cotton yield, but FFI limit the effects of water and nitrogen play, AFI and CFI not significant differences in the effects of cotton yield.

试验研究取得主要结论如下：(1)不同沟灌方式棉花的水氮耦合效应研究表明，棉花产量效应表明，三种沟灌方式增加施氮量和灌水量均有利于棉花产量的提高，但FFI限制了水氮效应的发挥，AFI与CFI的棉花产量效应差异不显著。

Graf, without question, is the greatest women's player in history.

格拉芙，现在，毫无疑问是女子网坛历史上最伟大的选手。

If not, you will have to look around at all your important data.

如果没有，您将需要检查所有的重要数据。