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Changes of yields, soil properties and micronutrients as affected by 17-yr fertilization treatments

文献类型： 外文期刊

作者： Li, Benyin 1 ; Wei, Mingbao 3 ; Shen, Alin 1 ; Xu, Jianmin 2 ; Zhang, Hailin 4 ; Hao, Fazheng 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 Nat Resources & Environm Sci, 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.Zhongmu Country Agrotechnol Extens Ctr, Zhengzhuo 451450, Peoples R China

关键词： organic matter;soil pH;soil property;pig manure

期刊名称：JOURNAL OF FOOD AGRICULTURE & ENVIRONMENT （ 影响因子：0.435； 五年影响因子：0.484 ）

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收录情况： SCI

摘要： Plant essential and toxic microelement status in soil and crops can be affected by long-term fertilization practices. The main objective of this paper was to investigate the change of micronutrients and Cd in soil and brown rice after 17-yr cropping and fertilization treatments in Southeast China. The long-teen fertilization experiment included treatments with different combinations of N, P, K and pig manure with or without straw incorporated. Soil pH, organic matter, available N, P, K and the contents of Cu, Zn, Fe, Mn and Cd in soil and brown rice were determined. Balanced chemical fertilizers (N, P, K) with the application of manure and incorporation of straw resulted in high available soil N, P, K, which produced highest yield of rice grain among the treatments. Manure application increased total Cu, Zn and Cd by 13-23, 5-8 and 138-162% and soil available Cu, Zn and Cd by 89-123, 61-71% and 212-225%, respectively, compared with their initial status. However, no such difference was observed for total soil Fe and Mn contents after 33 rice seasons. The Cu, Zn, Fe, Mn and Cd contents in brown rice were significantly affected by different long-term fertilization practices. The Cd contents in brown rice in three manure-applied treatments were 3 times (0.26-0.28 mg kg(-1)) as high as that (0.08 mg kg(-1)) in the control treatment, suggesting long-term application of pig manure from intensive livestock farms could result in Cd contents exceeding the upper limit of the criteria (>0.2 mg kg(-1), National Standard for Food Hygiene). Attention should be paid to potential soil Cd contamination caused by long-term application of pig manure containing heavy metals.

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[2]Dynamics of soil carbon to nitrogen ratio changes under long-term fertilizer addition in wheat-corn double cropping systems of China. Wang, X. J.,Cong, R. H.,Xu, M. G.,Zhang, W. J.,Xie, L. J.,Wang, B. R.,Cong, R. H.,Wang, X. J.,Huang, S. M..

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