灌区

The wet environment of soil also got more anaerobic in the long submersed time and promoted the utilization of soluble phosphorus by anaerobe and its transformation to OP, which explained the dramatically augment of OP in both land soil and drainage streams.

同时， 在周期较长的淹灌期间，土壤潮湿的厌氧环境增强，促进了厌氧微生物对溶解态磷的吸收利用，将其转变成有机态磷，因而在灌区土壤和排水中有机磷含量均有极显著的提高。

Water-deficient is a key factor to restrict agricultural production and economic development in the region. In order to improving the infrastructure conditions of agricultural production as soon as possible, inducting farmers to develop non-pollution vegetable and economic crops, helping farmers to increase income in planting and breeding, and facilitating sustainable development of agricultural production, according to Year 2002 Project Guide Rural of Mini-type Water Commonweal Establishment Construction and some relative requirements, local government has defined to construct rainwater-collection model project in Tianhui brae after analyzing and reasoning.

水资源缺乏是制约该区域农业生产和经济发展的关键因素，为改善丘陵灌区农业生产条件，引导农户发展无公害蔬菜和经济作物，在种植和养殖业上帮助农户增收，促进农业生产的可持续发展，根据2002 年度农村小型水利公益设施建设项目指南和相关要求，经过认真研究，科学分析论证，确定在天回山丘陵区实施集雨节水灌溉示范项目。

Based on hydrogeology in Shenyang area, this essay has made study on exploring underground reservoir in rain season besides making full use of river runoff, taking surface water back to underground, and establishing canal surface water and groundwater united exploring mathematics model, working out canal and well optimal plan.

依据沈阳地区水文地质条件，论文提出在适时充分利用外河区间径流的条件下，探求利用地下库容调蓄汛期雨洪，将地表余水引进回灌地下，并建立了渠灌区地表水、地下水联合运用数学模型，推求出渠井联合运用比较方案。

Beginning with the configuration effect of price on agricultural water resources,the authors analyzed the current price problem of agriculture water saving and prognosticated the inevitable trend of feebased agricultural water in china.

我国的农业灌溉用水过程中，除渠灌区的农业用水目前已经收取一部分水费外(此费用实际上为部分水利工程费用)，在井灌区的农业用水很多地方还未收取水费。

According to the selected BP model and related water table depth records and other information, the annual and monthly mean water table depth trends in the future planning year (2005, 2010) are forecasted on condition that water saving reconstruction projects are accomplished in the larger scale experimental zone of Hetao Irrigation district.

在此基础上根据黄河河套灌区多年的水文、气象和地下水信息，对一个大尺度区域的多年年均地下水埋深变化进行了BP模型的模拟与检验，预测了灌区节水工程实施后未来规划水平年(2005，2010年)年平均、月平均地下水位下降的动态。并进行了RBF模型与区域水均衡法的检验与对比，进一步验证了预测结果的可靠性。

In the experi- ment and practice m the zhongwei North Main Canal of the Hetao Irrigation District, a cheap and quick functioned slope protection method of soil and grass mixture for tree planting has been searched for de- sign and construction of irrigation canal and drainage in the desert region.

河套灌区在中卫北干渠进行了试验，在沙漠建渠道，用人工和植物固沙，沙漠区排水沟道的设计则充分考虑水流冲刷，对沟道防坍塌摸索了一条花钱少、见效快的草上植柳护坡办法，并在灌区内植树造林以固沙。

This study mainly focused on the water resource and environmental crisis, which are all caused by agricultural irrigation in Inner Mongolia irrigation area. Based on the balance of total water quantity between ground water, underground water and soil water, a study was made on the water quantity varieties in the headraces and offtakes, and the affection of the water cycle under the human activities was quantitively caculated.

针对引黄灌区所面临的水资源问题及灌溉引起的环境问题，以内蒙古河套灌区为研究对象，从灌溉引水、用水、排水之间的转化关系为切入点，以地表水、土壤水和地下水之间的水量平衡理论为基础，定量研究河套灌区在人类影响条件下的水循环特征。

The results show that, at the upstream of the Kaidou River, soil salinization is very weak; at middle reaches of the river, salinization improvement was a success in some irrigated areas, salt in the soil is very little, but in non-irrigated area, far away from the river, the salt percentage in soil is still very high; at the lower reaches of the Kaidou River, soil salinization is strong and there is a trend that the salinization increases with depth.

结果表明，在开都河上游，土壤盐渍化程度普遍较轻；在中游地带，灌区内的土壤盐渍化改良取得了一定的成效，土壤中的含盐量较低，但是在远离河谷的非灌区，土壤含盐量依然很高；在下游及靠近博斯腾湖的地区，土壤含盐量普遍较高，并有随深度增加而增加的趋势。

This study mainly focused on the water resource and environmental crisis, which are both caused by agricultural irrigation in the Inner Mongolia irrigation area. Based on the balance of total water quantity between ground water, underground water and soil water, a study was made on the water quantity in the head races and offtakes, and the effect of human activities on the water cycle was quantitatively calculated.

针对引黄灌区所面临的水资源问题及灌溉引起的环境问题，以内蒙古河套灌区为研究对象，从灌溉引水、用水、排水之间的转化关系为切入点，以地表水、土壤水和地下水之间的水量平衡理论为基础，定量研究了河套灌区在人类影响条件下的水循环特征。

So it created a negative effect that water using efficiency is low and the gross benefit is so poor in the area .

灌区自身水资源短缺，供需矛盾十分突出，而入鲁引水流量规模小(30立方米／秒)、控制灌溉面积大(200万亩)、节水工程少，更加剧了灌区水资源供需紧张的矛盾。

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。