Accumulation and Distribution of Soil Soluble N in Greenhouse Soil

Cai Yan Lu; Ya Jie Zhao; Zhi Quan; Jian Ma; Xin Chen; Yi  Shi

doi:10.4028/www.scientific.net/AMR.726-731.2413

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 726-731Accumulation and Distribution of Soil Soluble N in...

Accumulation and Distribution of Soil Soluble N in Greenhouse Soil

Abstract:

The amount of soil total soluble N (TSN), NH₄⁺-N, NO₃^--N and soluble organic N (SON) declined significantly with increasing of sampling depth (P < 0.0001). Compared with CK, application of chicken manure significantly increased the amount of soil TSN and NO₃^--N by 77.0% and 213.0% in the CM20 treatment, and 176.4% and 766.4% in the CM 30 treatment, respectively (P < 0.0001). The amount of soil NH₄⁺-N was lower in CM20 treatment than CK and CM30 treatments. However, the amount of soil SON was higher in CM20 treatment than CK and CM30 treatments (P < 0.0001). Proportion of NH₄⁺-N to TSN was lowest. Application of chicken manure remarkably increased the proportion of NO₃^--N to TSN, and decreased that of NH₄⁺-N and SON to TSN (P < 0.0001). Soil SON accounted for the majority of soluble N irrespective of soil layer in CK and CM20 treatments, and followed by NO₃^--N. However, the trend was reversed in CM30 treatments. This result indicated that application of chicken manure significantly increased the amount of soil soluble N, especially SON and NO₃^--N, which may extend N leaching risk into deeper soil layer.

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Periodical:

Advanced Materials Research (Volumes 726-731)

Pages:

2413-2417

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.726-731.2413

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Online since:

August 2013

Authors:

Cai Yan Lu*, Ya Jie Zhao, Zhi Quan, Jian Ma, Xin Chen, Yi Shi

Keywords:

Accumulation, N Leaching Risk, NH₄⁺-N, NO₃^--N, Soluble Organic N

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