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Changes in the soil environment from excessive application of fertilizers and manures to two contrasting intensive cropping systems on the North China Plain

文献类型: 外文期刊

作者: Ju, X. T. 1 ; Kou, C. L. 2 ; Christie, P. 2 ; Dou, Z. X. 3 ; Zhang, F. S.;

作者机构: 1.China Agr Univ, Key Lab Plant Soil Interact, Minist Educ, Coll Agr Resources & Environm Sci, Beijing 100094, Peoples R China

2.China Agr Univ, Key Lab Plant Soil Interact, Minist Educ, Coll Agr Resources & Environm Sci, Beijing 100094, Peoples R China; Henan Acad Agr Sci, Inst Soil & Fertilizat, Zhengzhou 450002, Peoples R China; Queens Univ Belfast, Dept Agr & Environm Sci, Belfast BT9 5PX, Antrim, North Ireland; Univ Penn, Sch Vet Med, Dept Clin Studies, Ctr Anim Hlth & Prod, Kennett Sq, PA 19348 USA

3.China Agr Univ, Key Lab Plant Soil Interact, Minist Educ, Coll Agr Resources & Environm Sci, Beijing 100094, Peoples R China; Henan Ac

关键词: greenhouse vegetables;wheat-maize rotation;nitrogen;phosphorus;potassium;electrical conductivity;soil pH;trace elements;heavy metals;US SAND-PLAIN;ELECTRICAL-CONDUCTIVITY;HEAVY-METALS;NITRATE;GROUNDWATER;ACCUMULATION;PHOSPHORUS;VEGETABLES;RESIDUES;IMPACT

期刊名称:ENVIRONMENTAL POLLUTION ( 影响因子:8.071; 五年影响因子:8.35 )

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收录情况: SCI

摘要: Effects of excessive fertilizer and manure applications on the soil environment were compared in greenhouse vegetable systems shifted from wheat-maize rotations 5-15 years previously and in wheat-maize rotations. N, P and K surpluses to the greenhouses were 4328, 1337 and 1466 kg ha(-1) year(-1), respectively compared to 346, 65 and - 163 kg ha(-1) year(-1) to wheat-maize fields. Subsequently, substantial mineral N and available P and K accumulated in the soil and leaching occurred down the soil profile in the greenhouses. Soil pH under vegetables was significantly lower than in the wheat-maize fields, while the EC was significantly higher in the vegetable soils. The mean Cd concentration in the vegetable soils was 2.8 times that in the wheat-maize rotations. Due to excessive fertilizer application in greenhouse vegetable production in northeast China, excessive salt and nitrate concentrations may accumulate and soil quality may deteriorate faster than in conventional wheat-maize rotations. (c) 2006 Elsevier Ltd. All rights reserved.

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