进行灌溉

In order to realize reasonable dispatching of water resources, some key questions are studied, such as operation method for multi-year reservoir, the associated operation of surface water and ground water, and as a result, the reasonable and feasible disposal measures are put forward.

叶河流域是一复杂水资源系统，既要考虑整个系统的灌溉和生态用水，又要兼顾27座电站的电力补偿，为了对水资源进行合理调配，对其中的关键问题如：多年调节水库计算方法、地表水与地下水的联合调节等问题进行了研究，提出了理论上合理、操作上可行的处理方法。

This paper studies the main geometrical parameter such as angle, height, width, stagger and the upper width in dentation and trapezoid flow path, firstly, uses the single-phase numerical simulation of the computational fluid dynamics technique to analyse the influence of different geometrical parameter on discharge coefficient and flow state exponent of drip emitter. Secondly, uses the two-phases numerical simulation of CFD (1% sand content ) to analyse the influence of the above mentioned geometrical parameter on the contribution regulation of sand and anti-clogging performance. Thirdly, uses the PIV （ particle Tracking Velocimetry ） technique which can see the small-scale flow path to observe and test the trajectories and velocities of solid particles in labyrinth flow path, and analyses the basic factors which can influence the movement characteristic of solid particles and the flow state in flow path.

本文以齿形流道、梯形流道为主要研究对象，以流道转角、流道高，流道宽、偏差量及梯形流道上底宽为主要结构参数，首先应用 CFD 单相流数值模拟技术对不同结构参数灌水器流道水力性能进行模拟，分析了不同结构参数对流态指数和流量系数的影响，其次，应用 CFD 两相流（含沙量为1%）数值模拟技术分析了结构参数对含沙量分布规律和抗堵塞性能的影响，然后，应用 PIV 可视化测试方法测试了固体颗粒在流道内运行轨迹及速度，分析了影响固体颗粒运动特性及流道内流体流态的基本因素，最后，对上述流道结构形式通过模具加工及滴灌带试制，进行了标准化测试（ GB/T 17187-1997 农业灌溉设备滴头技术规范和试验方法与 ISO 标准 ISO /TC23 /SC18 /WG5N4短周期堵塞测试程序），测试结果验证了 CFD 模拟结果，并提出了迷宫结构流道灌水器的抗堵塞设计方法。

The paper analyzes the soil water dynamics and water requirement law of alfalfa,feed maize and ensile maize under 3 kinds of water-saving irrigation conditions through experimental study on the crops.

对节水灌溉条件下的紫花苜蓿、饲料玉米和青贮玉米需水量进行了试验研究，分析了不同灌溉水平下3种饲草料作物的土壤水动态和需水规律。

In this paper,the test results of a few high-yield irrigation models for rice planting in black grass soil of cold region are presented,they show that the optimum irrigation model is the dry-wet intermitted irrigation method.

对寒地草甸黑土稻作的几种高产灌溉方式进行了试验研究，结果表明：干湿交替不建水层的间歇过水灌溉方式为最佳。

Through calculating and analyzing the monitoring data, the moisture transfer and form disciplinarian in the hugely thick aeration zone are posted under the flood irrigation, and the water amount of irrigative water that returned to supply the groundwater is calculated, then verify it using the Darcy formula.

通过对监测数据的计算和分析，揭示了大水漫灌条件下，灌溉水在包气带中湿润峰和零通量面的运移和形成规律，计算了灌溉水回归补给地下水的水量，并利用达西公式进行验证。

The introducing arrangement for this chapter is: Firstly, analyzing the amount of fixed asset investment at the whole society and rural areas(including the collections and the personals);analyzing the amount of fixed asset investment at the eastern, middle and the western provinces by second; after that, doing the up-date of farmer's investment and the rustically personal fixed asset investment at the eastern, middle and the western provinces; fourthly, making the analyses on the Agriculture, forestry, animal husbandry and fishing, labor forces, amounts of chemical fertilizer-spraying and the actuality of watering irrigation; fifthly, analyses on the actuality of agriculturally basic construction investment in this chapter; sixthly, nationally financial investment; taking the up-date of nationally financial investment , especially the ones being used to support the farmers with the following;and finally, the up-date of other investment owner being analyzed.

首先，分析了全社会、农村固定资产投资额。其次，分析了东中西部省区农村集体固定资产投资。第三，分析了农户投资的现状及东中西部农村个人固定资产投资。第四，对农林牧渔、劳动力、化肥施用量和水利灌溉现状进行了分析。第五，对农业基本建设投资的现状进行了分析。第六，对国家财政投资，尤其是财政支农投资现状进行了分析。第七，对其它投资主体的现状进行了分析。

After water attaining a designated standard,some reclaimed water went industry's,some went farmland irrigation,the rest for storage which mainly used in farmland irrigation,forestry,con—servation of water and soil tO reduee it to discharge into the South-to-North Water Diversion Project／or guaranteeing the water quality which was the key research item.

充分利用中水灌溉以减少其排入南水北调输水干线，保证调水水质，是南水北调工程研究的重要项目，现就截污导流中水灌溉充分利用情况进行了分析。

The separate furrow irrigation is a new way of economizing irrigation,which has been investigated and popularized,but there is no report in southern Ningxia hill region.

隔沟灌溉技术是一项新型的节水灌溉技术，在国内外都已进行了较长时间的研究和推广，但在宁南山区尚没有推广应用的报道。

Thus APRI at the root extending stage was an efficient irrigation method for tobacco production with water saving and quality regulating under lower fertilization in this study.

本研究结果表明，低肥时在烤烟伸根期进行分根区交替灌溉是烟叶生产中一种较好的节水调质的烟田灌溉方式。

Layout forms of irrigation canal system can be generally classified as three categories: series-wound canal system, equivalent shunt-wound canal system and nonequivalent shunt-wound canal system.

文摘：灌溉渠系的布置形式一般可分为串联渠系、等效并联渠系和非等效并联渠系，对这3种灌溉渠系水利用系数进行了理论研究。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。