pollution of ground water的意思|示意

In the international case, especially in America and Europe, ground water pollution from pesticide leaching has been studied for many years and advanced kinds of measures.

国际上，特别是美国和欧洲国家，早就开展了对农药污染地下水的研究，并提出了许多控制措施。

Nitrogen may cause non_point pollution in water in forms of eutrophication in surface waters and high nitrate concentration in ground water.

氮素流入对水域的污染为非点源污染，主要导致地表水的富营养化、地下水硝酸盐含量过高等。

Nitrate content in ground water accumulates obviously with the increase of N-fertilizer applied, so the potential pollution should not be ignored.

随着施N时间的推移和施用量的增加，地下水中硝态氮具有明显的积累趋势，潜在污染不容忽视；

Analysis on the collection of ground water samples is necessary for water pollution investigation to ascertain the water pollution situation.

地下水污染调查需要采集地下水样品进行分析以确定地下水污染程度。

To research the properties of pore structure in soil has great practical significance in preventing and curing soil erosion, environment protection, reducing pollution of ground water and so on.

研究土壤表土孔隙结构特征对于我国区域土壤的侵蚀防治、环境保护和减少地下水污染等问题均具有重要意义。

In 2005, state media reported that pollution made major portions of China's river water and ground water supplies were unsafe.

中国官方媒体2005年报导，污染使得中国大部份河水和地下水不安全。