查询词典 irrigation engineering

Through analysis land leveling, irrigation and drainage engineering ,field roads and other projects, we can draw a conclusion that land arrangement and irrigation and drainage engineering are the investment major part of the project.

由于作物对耕作土地的坡度有一定的要求，同时为便于规模经营和机械化操作，因此土地平整是土地开发整理的基础工程，是增加耕地面积的主要措施，也是其它工程实施的先决条件。

Products are widely used in chemical industry, electroplating, urban and rural water engineering, irrigation, drainage and irrigation engineering and urban aquaculture, etc

产品广泛应用于化工、电镀、城乡自来水工程、农田灌溉、喷灌工程、城市排污、海水养殖等多种行业。

Bubbler irrigation is one type of the micro-irrigation. It aims directly at apparatus blockade problem of drip-irrigation system in China.

涌泉灌溉技术是针对滴灌系统使用过程中灌水器容易堵塞，以及农业生产管理水平不高而设计的一种微灌技术。

Two kinds of irrigation strategies, including irrigation up to field capacity and fixed amount based on soil texture, were employed with bubbler irrigation system.

结果表明，传统灌溉方式下，优化氮素处理保证了番茄产量，与传统氮肥处理相比，追施的氮肥数量减少了48%；在番茄的主要生育时期内，采用每次灌溉至田间持水量及固定灌额处理的灌溉量分别比传统灌溉处理减少46%和30%；采用同样指标所推荐的氮肥追施数量也分别减少14%和10%，明显减少土壤–蔬菜体系中氮素的表观损失，减轻了由于过量施氮而对环境造成的影响。

The result shows that: The variation rhythm of the sensitivity index changed unanimously for Jensen,Blank and Stewart water production functions of spring wheat in Liangzhou city,the volume is small in the former stage,then become large at the middle stage,and less at the last stage. Jensen and Stewart water production functions are better of spring wheat in Gulang County in 1987-1989. The Variation rhythm of water deficiency sensitive index is unanimous: the volume are small at first,then large at middle,and diminish at last. The Variation rhythm of water deficiency sensitive index is unanimous in Jensen,Blank and Minhas of flax in Liangzhou county in 1987-1989. The water deficiency sensitive index in Gulang district in 1987-1989 models bad,are too many minus. 3 Establishing the non-linear model to definitive the irrigation quota and dimension of single crop,according the three prototype Precipitation,allocating the limited water optimally according to full water supply,95 percent,75 percent and 50 percent. Economy benefit is the biggest aim function,so getting three groups for irrigation quota,irrigation dimension and benefit,the biggest benefit is the most optimal result.

结果表明：1985-1986 年凉州春小麦Jensen 模型、Bl(来源：10a1ABC论文网www.abclunwen.com)ank 模型和Stewart 模型的敏感指数变化规律接近一致，在前期较小，中期增大，最后再减小。1987-1989 年古浪春小麦水分生产函数以Jensen 模型和Stewart 模型拟合较好，其敏感指数变化规律比较一致，敏感指标值前期较小，中期增大，后期又减小。1983-1985 年凉州亚麻水分生产函数以Jensen 模型、Blank 模型和Minhas 模型敏感指标值变化规律比较一致：先减小，后增大，最后再减小。1987-1989 古浪亚麻敏感指数出现负值较多，模型拟合较差。3 建立单作物种植条件下灌溉定额与灌溉面积的确定的非线性规划模型，将有限的水量按照充分供水，95%、75%和50%供水来分配水资源，以经济效益最大为目标函数，得出三组灌区灌溉面积和效益结果，其中以效益最大为最优解。

In the design of drip irrigation system, reasonable dripper discharge should be chosen and irrigation water should be supplied in order to make soil reach the designed moisture uniformity; the moisture uniformity of soil along the drip irrigation pipe should be controlled mainly.

文中提出了应用于工程设计中的滴头流量设计模式应满足的要求。在滴灌系统设计中，要使土壤达到设计的湿润均匀度就应选择合理的滴头流量，并设计出合理的灌水量，而且应主要控制沿滴灌管方向的土壤湿润均匀性。

Through the photographic technology of fisheye lens and achieved the space image of cotton canopy structure distributing at different condition, and setupped cotton canopy structure base after image analysis. The experiment results indicated that the adaptability of different varieties to plant density is different, reasonable plant density is benefit to the raise of varieties product, and Xinluzao10 is better at high density（225000plant/ hm2） condition and Xinluzao12 is better at mid-high density（150000 plant / hm2） condition. For different nitrogen, Xinluzao10 is better at right nitrogen application amount（600 kg/ hm2） condition and Xinluzao12 is better at mid-high amount（900kg/ hm2）condition. For different irrigation, Xinluzao6 and Xinluzao12 is better at limited drip irrigation amount（1500 m3/ hm2） condition and Xinluzao8 Xinluzao13 is better at right drip irrigation amount（3000 m3/hm2） condition.

利用鱼眼镜头照相技术获取了不同处理棉花冠层分布空间图象，对图像进行处理分析，建立了棉花冠层图像库及分析诊断指标，研究结果表明，不同品种对种植密度适应性不同，合理的配置种植密度有利于品种的产量潜力的挖掘，高密（225000plant/ hm2）条件下选择新陆早10号、中高密（150000 plant / hm2）条件下选择新陆早12号栽培种植较为适宜；对于不同氮肥用量，适量氮肥用量（600 kg/ hm2）条件下选择新陆早10号、中高氮肥用量（900kg/ hm2）条件下选择新陆早12号较为适宜；对于不同灌水量，限量滴灌（1500 m3/ hm2）条件下选择新陆早6号、12号种植较适宜，适量滴灌（3000m3/hm2）条件下选择新陆早8号、13号种植较适宜。

ChapterⅠ: Analyze the Irrigation works Law in the Tang Dynasty in detail, including Officials of the irrigation works, flood control, irrigation, water carriage, urban offtake, and so on.

第一章：详细论述了唐代水利立法的数个方面，包括职官设立、防洪、灌溉、津梁维修、城市水利设计及漕河运输等。

The improvement of irrigation ditch system, the perspicuity of management system of irrigation facilities and the enhancement of farmer collective activities are the keys to the harmonious development in rural irrigation system.

文章认为，渠系状况的改善，水利设施治理制度的明晰，农民集体行动能力的增强是农村水利和谐发展的关键。

It is favorable on the increase of leaf chlorophyll content,accumulation of day matter and WUE of cucumber under the proper irrigation frequency under drip irrigation manner and irrigation frequency six day.

适宜的灌溉频率也即是在滴灌条件下灌溉频率为6天对于增加叶片的叶绿素含量、干物质积累和水分利用率是有利的。

I go to school at night.

我是上上学。

Clear Tip Nasal Aspirator: A soft time and gentle suction action makes removing excess mucus easy.

鼻吸明确提示：一个柔软的时间和温柔吸力行动使消除过剩的粘液容易。