查询词典 irrigation engineering

The study in this paper has the directive significance for choosing dripper discharge and interval of water dropper, as well as, designing irrigation quantity for line source drip irrigation.

该研究对线源滴灌滴头流量、滴头间距的选择以及灌水量的设计有指导意义。

In terms of the question of soil moisture uniformity for line source drip irrigation, experiments were conducted to study the effects of dripper discharge and irrigation water supply to soil moisture uniformity.

本文同时针对线源滴灌均匀性问题，通过试验研究了滴头流量和灌水量及滴头间距对土壤湿润带内水分分布均匀性的影响。

The effect of irrigation on the yield of wheat and water utilization under limited irrigation was studied in the hilly dry farming in the west of Henan province.

在河南省丘陵旱作区，采用限量灌溉的方法，研究了灌水对冬小麦子实产量和水分利用的影响。

Israel more than 80% of the irrigated farmland has been applied drip irrigation, 10% of Ejecta, 5% for mobile irrigation.

1999年，以色列超过80％的灌溉农田已经应用滴灌，10微喷，5％为移动灌溉％。

The most polluted areas is near Tianjin second gasworks and around sewage river as well as sewage irrigation area. So we can conclude the major sources of pollution is atmospheric deposition and sewage irrigation. Second, It is positive correlation between the heavy-metal contamination and layered silicate minerals, while it is negative correlation between heavy-metals and quartz , feldspar as well as other minerals.

二、重金属污染元素含量与层状硅酸盐矿物含量呈正相关，而与石英长石等矿物含量呈负相关，充分说明污染元素主要赋存在层状硅酸盐矿物中，这与矿物自身的结构有着密切的关系，层状硅酸盐矿物具有很大的层间域，有利于对其他物质的吸附作用。

The effect of long-time irrigation of petroleum wastewater on glebe microbial biomass and soil enzyme activities in Shenfu irrigation area was studied.

以土壤微生物生物量和土壤酶活性等为土壤微生物变化指标，研究了含油污水长期灌溉对东北沈抚灌区农田土壤微生物的影响。

Using matured Thompson seedless grape under extreme drought conditions and deep pit infiltration irrigation technique, the effect of different irrigation quotas on grape sugar content and fruit shape index was determined.

在极端干旱条件下，以成龄无核白葡萄为研究材料，采用深层坑渗灌灌水技术，研究了不同灌溉定额对葡萄含糖量和果型指数的影响。

The study was focused on the amount of available water in soil, hydraulic conductivity in soil-root system from different root zones, sap flow from root to stem, compensatory effect of root water uptake, the fruit growth and physiological attibutes, evaporation and transipiration, and plant water use efficiency. Experiment plants involved apple tree, grape, peach, etc. Fruit trees were irrigated in both half root zones or water was continuously supplied to the one-half and the other half kept dry(fixed partial rootzone irrigation, F), or water was alternatively supplied to two halves (alternative partial rootzone irrigation, A).

项目通过水平或垂直方向交替滴灌、固定局部滴灌及均匀灌溉方式，研究根区土壤湿润方式改变对果树根系微生态系统水分有效性、水分传导、根系吸水补偿效应、根茎液流、生长生理状况、蒸发蒸腾及水分利用效率的影响。

The transport of soil water in sunflower field was simulated by HYDRUS model in Hetao irrigation area in Inner Mongolia, and thus the change of soil water in the different two periods of irrigation was distinguished significantly.

通过HYDRUS模型模拟计算了河套灌区不同灌溉时期葵花根层（0~40cm）土壤水的动态规律。

By using the HYDRUS computer program, one dimensional water salt movement was simulated under diffirent well canal combined irrigation schemes with typical irrigation regime for cropping wheat in spring and corn in late summer.

针对灌区土壤地下水位高、地下水矿化度高、潜水排泄以蒸发为主等原因，研究了基本灌溉模式、井渠结合灌溉模式的改变对不同程度盐碱地改良的效果，提出适合银北灌区不同盐碱地的灌溉制度

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。