文献类型： 外文期刊

作者： Song Xiao-Zong ² ; Zhao Chang-Xing ¹ ; Wang Xiao-Lan ² ; Li Ji ² ;

作者机构： 1.Qingdao Agr Univ, Coll Agr & Plant Protect, Qingdao 266109, Shandong, Peoples R China

2.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China

3.Shandong Acad Agr Sci, Soil & Fertilizer Inst, Tsinan 250100, Peoples R China

4.Chinese Acad Sci, State Key Lab Urban & Reg Ecol, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China

关键词： Nitrate leaching;Groundwater;Nitrate concentration;Nitrogen balance;Intensive vegetable production

期刊名称：COMPTES RENDUS BIOLOGIES （ 影响因子：1.583； 五年影响因子：2.123 ）

ISSN： 1631-0691

年卷期： 2009 年 332 卷 4 期

页码：

收录情况： SCI

摘要： Because of intensive vegetable production in plastic greenhouses in northern China, the potential risk of nitrate leaching to groundwater is increasingly apparent, threatening ecosystem services and the sustainability of food production. In the present work, nine drainable lysimeters were installed into vegetable fields, with in-situ loamy soils, in Shouguang City of the north China vegetable base. The experiments were conducted to quantity the magnitude and variability of nitrate leaching to groundwater and to access the fate of total fertilizer-N inputs in the area. The results obtained indicated that: under local conventional agronomic practices, there is a high discrepancy in leaching nitrate-N concentration (ranging from 17 to 457 mg L(-1)), and nitrate losses (152-347 kg N ha(-1)) were observed from 1 -m soil profiles in the field. Meanwhile, high fertilizer N application resulted in low N efficiency, with only (33.0 +/- 13)% (mean +/-: S.D.) of input N absorbed by the crops, while additionally nearly half of the total inputs of N were unaccounted in a partial N balance sheet. It is concluded that groundwater pollution associated with greenhouse-based vegetable production had been confirmed in Shouguang, adversely affecting water quality and leading to serial agro-ecological problems. To cite this article: X.-Z. Song et al., C R. Biologies 332 (2009). (C) 2008 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.