NITROGEN APPLICATION AND UNDERGROUND WATER CONTAMINATION IN SOME AGRICULTURAL SOILS OF SOUTH WESTERN NIGERIA

被引：19

作者：

ADETUNJI, MT

机构：

[1] Department of Soil Science and Agricultural Mechanisation, University of Agriculture, Abeokuta

来源：

FERTILIZER RESEARCH | 1994年 / 37卷 / 02期

关键词：

LEACHING; NITRATE; UNDERGROUND WATER;

D O I：

10.1007/BF00748556

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

The effect of nitrogen fertilizer application on nitrate leaching and contamination of underground and surface waters in a continuously cropped lowland area of South Western Nigeria has indicated a high potential for nitrate leaching. It was estimated that with 100 kg N ha-1 applied, as much as 29.5 kg N ha-1 could be lost through leaching below the root zone of a maize crop, Over a 3 year period the applied nitrogen contributed to nitrate pollution of underground water significantly in excess of the maximum level accepted for potable water. This was particularly high in valley bottoms. where the nitrate nitrogen content ranged from 12.8 to 24.6 mg L-1. Contribution to adjacent stream was, however, not significant.

引用

页码：159 / 163

页数：5

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