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Dynamics of Soil and Grain Micronutrients as Affected by Long-Term Fertilization in an Aquic Inceptisol

文献类型: 外文期刊

作者: Li Ben-Yin 1 ; Huang Shao-Min 1 ; Wei Ming-Bao 3 ; Zhang, H. L. 4 ; Shen A-Lin 1 ; Xu Jian-Ming 2 ; Ruan Xin-Ling 5 ;

作者机构: 1.Henan Acad Agr Sci, Inst Plant Nutr Agr Resources & Environm Sci, Zhengzhou 450002, Peoples R China

2.Zhejiang Univ, Coll Environm & Nat Resources, Hangzhou 310058, Zhejiang, Peoples R China

3.Zhengzhou Univ Light Ind, Henan Prov Key Lab Surface & Interface Sci, Zhengzhou 450002, Peoples R China

4.Oklahoma State Univ, Dept Plant & Soil Sci, Stillwater, OK 74078 USA

5.Henan Univ, Coll Environm & Planning, Kaifeng 475000, Peoples R China

关键词: manganese: 7439-96-5;copper: 7440-50-8;zinc: 7440-66-6;iron: 7439-89-6;phosphorus: 7723-14-0;agrichemical;fertilizer;nitrogen fertilizer: agrichemical;fertilizer;micronutrients: nutrient;organic fertilizer: agrichemical;fertilizer;diethylenetriamine pentaacetic acid: 67-43-6Zhengzhou: China;Asia;Palearctic region;atmospheric deposition;long-term fertilization;intensive cropping;Aquic Inceptisol soil

期刊名称:PEDOSPHERE ( 影响因子:3.911; 五年影响因子:4.814 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: Micronutrient status in soils can be affected by long-term fertilization and intensive cropping. A 19-year experiment (1990-2008) was carried out to investigate the influence of different fertilization regimes on micronutrients in an Aquic Inceptisol and maize and wheat grains in Zhengzhou, China. The results showed that soil total Cu and Zn markedly declined after 19 years with application of N fertilizer alone. Soil total Fe and Mn were significantly increased mainly due to atmospheric deposition. Applications of P and organic fertilizer with incorporation of straws resulted in dramatic increases in soil total Cu, Zn, Fe, and Mn. Soil diethylenetriamine pentaacetic acid (DTPA)-extractable Cu in all treatments sharply decreased from initially 1.12 to about 0.8 mg kg(-1). The treatments with organic fertilizer had the highest soil DTPA-extractable Cu, Zn, Fe, and Mn after 19 years of cropping and fertilization, thus demonstrating the important role of organic fertilizer application in improving available micronutrient status. Cu and Zn contents in wheat grains in the no-P treatments were significantly higher than those of the treatments with P application. In addition, Fe and Mn contents in wheat grains were positively correlated with their soil DTPA-extractable concentrations. These indicated that the long-term application of organic fertilizer resulted in significant increases in soil total and available micronutrient concentrations and remarkable reduction in wheat grain Cu and Zn contents, which was due to high soil available P. Key Words: Cu, organic fertilizer, soil available P, wheat, Zn

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