查询词典 water and soil

In the explore in water seepage mechanism of highway engineering, at the foundation of author's and other people's research, the author study the groundwater seepage and infiltration of rain and water with the groundwater dynamics, the rock mechanics ,the soil mechanics, the hydrologic geology, the engineering geology, the agrology.

公路工程水渗流机制的研究还很少，现有的相关研究主要是建立在地表水的疏排、饱和渗流的简单计算、及直观观察经验基础上的防排水设计和施工，没有或很少有根据地下水贮存、渗流与公路工程建设的相互影响，雨水入渗在公路工程结构中渗流规律的研究。

Influence of wheat and broad bean intercropping and barley and broad bean intercropping on soil water consumption and water use efficiency

采用反映系统特性变化信息的过渡过程曲线，来自动整定PID参数，以使系统一直能在最优的状况下运行。

Experiments were carried out. The effects of defoliation on photosynthesis, dry matter translocation, grain yield and water use efficiency were investigated with different defoliation degrees and different soil water levels.

该文通过水分胁迫条件下不同程度脱叶和不同水分条件下脱叶-不脱叶的田间试验，研究了减少蒸腾器官对冬小麦光合特性、干物质转移、产量和水分利用效率的影响。

In the design of drip irrigation system, the choice of dripper discharge affects the irrigating water quality and the costs of drip irrigation engineer, while the soil moisture uniformity for line source drip irrigation affects crops water use directly, and it is the foundation to design drip irrigation system.

滴灌系统设计中，滴头流量的选择关系到灌水质量和滴灌工程的造价问题；而线源滴灌土壤湿润均匀性问题影响到滴头流量的选择，并直接影响着作物对水分的利用，是滴灌系统设计的基础。

Daily and seasonal variations of dominant plant species transpiration rate are distinct in the research area, and the transpiration rate is lineally relevant to environmental factors. The evapotranspirations of plant species are different in sandy plant communities of the research area. The position of water deficiency layer in all the communities soil isinfluenced by position of the water moisture severe fluctuation layer and dense root systems layer.

研究区主要植物种蒸腾速率日变化和季节变化明显，蒸腾速率与环境因子呈线性显著相关；研究区植物群落蒸散量随植物种类而不同；各群落土壤水分亏缺的空间分布与土壤水分剧烈变化层、根系密集分布层相吻合，季节动态则与植物物候期密切相关。

Daily and seasonal variations of dominant plant species transpiration rate are distinct in the research area, and the transpiration rate is lineally relevant to environmental factors. The evapotranspirations of plant species are different in sandy plant communities of the research area. The position of water deficiency layer in all the communities' soil is influenced by position of the water moisture severe fluctuation layer and dense root systems layer.

研究区主要植物种蒸腾速率日变化和季节变化明显，蒸腾速率与环境因子呈线性显著相关；研究区植物群落蒸散量随植物种类而不同；各群落土壤水分亏缺的空间分布与土壤水分剧烈变化层、根系密集分布层相吻合，季节动态则与植物物候期密切相关。

The systematic experiment of conservation tillage in two crops a year region has been designed and performed according to the maximum benefit of resources, environment and production, based on the research achievements of conservation tillage technology in one crop a year regions. Series experiments and embedded theory study have been conducted for estimating the feasibility of water saving in conservation tillage and guiding irrigation. At the same time, the evaporations of soil water under the condition of conservation tillages are measured and its mathematic model is studied and significant research achievements have been obtained.

中文文摘：为研究一年两熟地区实行全程保护性耕作技术体系的可行性，选择出适宜该地区一年两熟的保护性耕作技术体系和提供指导灌溉用水的理论依据，论文在一年一熟地区保护性耕作体系研究成果的基础上，以一年两熟地区全程保护性耕作体系的资源环境效益和生产效益为依据，进行了深入的理论分析和田间试验研究；同时进行了保护性耕作条件下，土壤水分棵间蒸发的专项试验及模型研究，取得了重要的研究进展。

The systematic experiment of conservation tillage in two crops a year region has been designed and performed according to the maximum benefit of resources, environment and production, based on the research achievements of conservation tillage technology in one crop a year regions. Series experiments and embedded theory study have been conducted for estimating the feasibility of water saving in conservation tillage and guiding irrigation. At the same time, the evaporations of soil water under the condition of conservation tillages are measured and its mathematic model is studied and significant research achievements have been obtained.

为研究一年两熟地区实行全程保护性耕作技术体系的可行性，选择出适宜该地区一年两熟的保护性耕作技术体系和提供指导灌溉用水的理论依据，论文在一年一熟地区保护性耕作体系研究成果的基础上，以一年两熟地区全程保护性耕作体系的资源环境效益和生产效益为依据，进行了深入的理论分析和田间试验研究；同时进行了保护性耕作条件下，土壤水分棵间蒸发的专项试验及模型研究，取得了重要的研究进展。

These polders play a pole in protecting the safety of peoples lives and properties and promoting the economic development and social stabilization. However, due to the accumulation of fertilizer and pesticide in soil and the eluviations of salinity, water quality of these polders changed to be worse, the entironment was influenced, and water environment here was threatened severely.

这些圩区有效保护了人民的生命财产安全，促进了经济发展和社会稳定，但由于土壤中肥料、农药、盐分的淋溶而不断积聚，引起圩区水质变化，给区域生态环境带来影响，对流域水环境构成严重威胁。

The results showed that partial root-zone drying and alternate partial root-zone irrigation treatments reduced tobacco water consumption and tobacco yield, but tobacco water use efficiency increased with 7.5% and 11.2%, N and K contents of middle leaves treated with N 0.20 g/kg soil enhanced 23.1% and 25.2%, 33.6% and 59.8%, respectively when compared to the conventional irrigation treatment.

结果表明，在不同施N水平下，与常规灌溉相比，部分根干燥灌溉和分根区交替灌溉的烤烟耗水量下降，产量有所减少，而水分利用效率提高7.5%和11.2%；施用N 0.20 g/kg土时，PRD和APRI中部叶N含量分别提高23.1%和25.2%，K含量分别提高33.6%和59.8%。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。