自17世纪以来，农田排水设施一直是高效农业的先决条件之一。
Since the 17th century, field drainage has been one of the prerequisites of efficient agriculture.
在农田排水中常常采用砾石或过滤层来防止粉细砂和泥沙进入排水沟。
In drainage of agricultural lands, a filter or gravel envelope is used to prevent the entrance of fine sand and silt into the drains.
农田排水是造成农业非点源污染的一个重要来源，由于其具有分散性而难以人为控制。
Agricultural drainage is one of important contributors of non-point source pollution, and it is difficult to treat in practice due to its dispersed nature.
估算结果表明利用BP神经网络可以准确地估算农田排水量，最大相对误差仅为-2.45%。
The results of estimation show that BP neural network can estimate farmland drainage accurately with the largest relative error only of-2.45%.
Koroneia湖周围都是农田，并且在1981年承受了不断增加的密集农业以及工业增长的压力，周围的工厂把污水排入湖中，周边Lagadas镇的污水也同样排放到这里，污水处理站建立于2001年，但依旧没有与排水系统连接。
Lake Koroneia is surrounded by farmland and in the 1980s it suffered from increasingly intensive agriculture, but also from the growth of industry. Factories emptied waste water into the lake.
项目将改造完成淠史杭地区32万公顷农田的现有灌溉设施，为17万公顷农田修建防洪工程，为22万公顷农田提供更可靠的灌溉，改善巢湖周边地区2.3公顷农田的排水条件。
The project would rehabilitate &complete existing irrigation facilities on 320,000 ha in the Pishihang area.
城里有难以置信的公共设施：人行道、学校、室内浴场、复杂的排水系统和围起来的农田。
It had incredible public amenities, footpaths, schools, an indoor bath, complex drainage and enclosed fields.
主要观测护田林带对农田小气候的影响、林带的排水作用以及改土效果。
The major observation items are the effect of the belt to the small range climate of the farmland, drainage and soil improving functions of the belt.
农田栽种早园竹，除了要全面做好竹园常规管理外，还应做好土壤改造、深翻、开沟排水等工作。
Soil transformation, deep plough and trenching to de water should be done besides routine management before planting Phyllostachys propinqua McClure in farmland.
城市化地区的排水系统不仅包括由市政雨水管网构成的市政排水系统，还包括原属农田排涝范畴的区域排涝系统。
The drainage systems of urbanized area include the municipal drainage systems that consist of rain pipes and the hydrological drainage system that developed from the farm drainage system.
农田的排水系统通常是埋在农田中的管子，但也可以是明渠。
A land drain is usually a pipe buried in farm land but it may also be an open channel.
暗管排水可以很好的控制排除农田地下水和土壤含水量，提高土地利用率。
Pipe drainage system has big control of excluding agricultural groundwater and soil moisture and raise the utilization of land area.
暗管排水可以很好的控制排除农田地下水和土壤含水量，提高土地利用率。
Pipe drainage system has big control of excluding agricultural groundwater and soil moisture and raise the utilization of land area.
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