灌区

In order to assess the impacts of wastewater on regional groundwater system,swage water,groundwater samples were taken and analyzed in typical croplands in the North China Plain where urban wastewater or groundwater have been used for irrigation for several dec.

本文作者通过对石家庄市近郊具有几十年污水灌溉历史的典型灌区的地下水进行了采样分析，评价了华北平原区农业污水灌溉对区域地下水环境的影响。

In chapter 5, the author compiled the programme of isolated well for unconfined well configuration, and as a example, a irragation area is arranged.

在第5章，作者编制了应用井群布局的"割离井法"程序，并用此对一灌区进行了井群布局计算。

The pollution of lakes in irrigation district is particular because of the influence of the characteristic of upriver contamination.

在上游污染物排放特性的影响下，位于灌区内的湖泊水环境污染问题必定有其特殊性。

The research is about the reuse of urban sewage for virescence irrigation, and the influence of sewage irrigation on eco-environment such as soil, plant, etc. is studied. Under the condition of field sewage irrigation, the transport and transformation and accumulation mechanism of heavy metals, nutrients and organic pollutants as vaporizable hydroxybenzene etc. in the soil-plant system are analyzed. The heavy metal pollution is evaluated by the comprehensive pollution index. The spatial variability of heavy metals in sewage irrigation area is further understood. The spatial variability of heavy metals and physical and chemical properties of soil are reflected in a more straight way by the theory model of variance function curve based on the geographical information system.

在城市污水回用于绿化灌溉对土壤、植物等生态环境的影响研究中分析了大田条件下污灌对土壤-植物体系中重金属、养分及挥发酚等有机污染物迁移转化及富集机理，对重金属污染进行了综合污染指数评价，进一步了解了污灌区重金属分布的空间异质性，基于地理信息系统提出了变异函数曲线的理论模型，更直观地反映出了重金属元素与土壤理化参数的空间变异特征。

Focusing on water conservancy, we will improve agricultural infrastructure, accelerate related upgrades of large and medium sized irrigated areas, expand the area in which water-conserving irrigation methods are used, create high-grade cropland, and ?nish reinforcing dilapidated large, medium-sized, and key small reservoirs.

以农田水利为重点，加强农业基础设施建设，加快大中型灌区的配套改造，扩大节水灌溉面积，建设高标准农田，完成大中型和重点小型病险水库除险加固任务。

Focusing on water conservancy, we will improve agricultural infrastructure, accelerate related upgrades of large and mediumsized irrigated areas, expand the area in which water-conserving irrigation methods are used, create high-grade cropland, and ?nish reinforcing dilapidated large, medium-sized, and key small reservoirs.

以农田水利为重点，加强农业基础设施建设，加快大中型灌区的配套改造，扩大节水灌溉面积，建设高标准农田，完成大中型和重点小型病险水库除险加固任务。

Then the constructing, running and managing system of demonstration zoon, which contracts with the market economy, will be formed.

在综合分析节水示范区自然和社会因素的基础上，对节水技术进行组装凝练，建设综合节水示范区，监测示范区的农业和生态用水变化状况，评估节水效益；探索渠灌区节水农业综合示范区管理体制和运行机制，形成一套相对完整的节水农业技术集成和发展模式，形成与市场经济接轨的示范区建设、运行与管理机制；建立示范区节水效益评估方法及监测指标体系。

So in the Valley such as Ankou, it is much more advantage to develop rain-fed agriculture using the natural valley runoff area to collect rainwater.

由于降水的随机性和不可控性，集水效率的高低直接影响到最终的用水量与灌区效益，所以集水效益在整个雨水利用系统中是至关重要的一环。

Using the infrared images of China′s statellite and infrared airphotos,we have investigated the irrigation arear,analysed and evaluated the irrigation environment and conditions in Zhong Ning Country,Ning Xia.

本文利用我国国土普查卫星的假彩色红外遥感图象，结合假彩色红外航片，在宁夏河套卫—宁灌区的中宁县进行了灌溉面积调查、灌溉环境及水利条件分析评价试验研究。

Exposure ecological risks of benzo pyrene to species in water, soil and sediment were investigated based on distributions of concentrations derived from the modeling and acute toxicity data for tested species from literature.

将根据上述研究得到的各环境介质暴露浓度分布及该化合物对实验生物急性毒性数据分析了苯并芘在天津污灌区水体、土壤和沉积物三种环境介质中的生态风险性。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。