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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 457-458Effects of Dicyandiamide on the Accumulation and...

Effects of Dicyandiamide on the Accumulation and Leaching Risk of Soil NO₃^--N in Aquic Brown Soils

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Abstract:

A field experiment was conducted at the vegetable production base of Lixiang town in Shenyang city, Liaoning province to study the effects of dicyandiamide (DCD) application on the accumulation and leaching risk of soil nitrate. The results showed that applying DCD significantly decreased the amount of soil NO₃^--N in the 0-10cm and 10-20cm soil layers compared to without DCD addition (P < 0.01). However, the difference was not significant in the 20-40cm (P > 0.05). These results indicated that the application of DCD reduced the leaching risk of soil nitrate from topsoil to subsoil. At the 28d of fertilizer application, the amount of soil NO₃^--N was higher in the NP+M, NP+M+2%DCD and NP+M+5%DCD treatments than in the M, M+2%DCD and M+5%DCD treatments, suggesting that the combined application of chemical fertilizer and organic manure weakened inhibiting effect of DCD on the amount of soil NO₃^--N.

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Frontiers of Mechanical Engineering and Materials Engineering II

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Periodical:

Applied Mechanics and Materials (Volumes 457-458)

Pages:

102-107

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.457-458.102

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Cite this paper

Online since:

October 2013

Authors:

D.B. Qiao, Y.L. Zhang, L.L. Xiang, C.Y. Lu, X. Chen

Keywords:

Aquic Brown Soils, Dicyandiamide, N Transformation, NO₃^--N Leaching

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