Effects of Typical Chemical Agents on Prevention of Non-Point-Source (NPS) Pollution in a Sloping Orchard

Abstract:

In this paper, two typical chemical agents SAP and PAM were selected to reduce NPS pollution. Soil water content, nutrient transport and soil erosion have been researched. The results showed that the water deep percolation was reduced and the moisture of root zone increased by 3.6%-12.69% after chemical agents application; PAM can immobile soil grains, and significantly reduce soil erosion on sloping land by 25.5%-53.4%. The synergies of PAM and SAP can significantly influence transport of nutrients in the soil vertical profile, moreover, the content of nutrient was enriched in root zone that the content of Nitrate-N increased 14.7% and Ammonium-N increased 9.8%. It can been found that CL2 (SAP150 kg/k㎡+PAM4.5 kg/k㎡) treatment is superior to CL1 (SAP150 kg/k㎡+PAM2.25 kg/k㎡) in soil moisture conservation and reducing NPS pollution in two slopes orchards.

• Periodical: Advanced Materials Research (Volumes 550-553)
• Pages: 1168-1172
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.550-553.1168
• Online since: July 2012
• Authors: Ren Kuan Liao, Pei Ling Yang, Shu Mei Ren, Hang Yi, Bo Zhou, Zhu Zhou
• Keywords: Non-Point-Source (NPS) Pollution, PAM, SAP, Soil Erosion, Soil Water Content (SWC)

References

[1] C.S. He, B.J. Fu, L.D. Chen: Chinese Journal of Enviromental Science. 19(1998), 87-91. (in Chinese).

[2] Y.B. Zhang, F.L. Zheng, et a1: Advances in Water Science. 18(2007), 123-132. (in Chinese).

[3] L. Wu, T.Y. Long, Y.X. Wang, Q.Q. Lu: Transactions of the Chinese Society of Agricultural Engineering. 27(2011), 55-60.

[4] G.H. Zou, J.Y. Cui: Transactions of the Chinese Society of Agricultural Engineering. 23(2007), 11-17.

[5] B. Liu, Z.X. Xu: Transactions of the Chinese Society of Agricultural Engineering. 27(2011), 52-61. (in Chinese).

[6] K. Holvoet, V. Griensven, P. Seuntjens, et al: Physics and Chemistry of the Earth. 30(2005), 518-526.

[7] V. Chaplot: Journal of hydrology. 312(2005), 207-222.

[8] H.E. Li, N. Deng, Y.Q. Yang, D.Q. Shi: Transactions of the Chinese Society of Agricultural Engineering. 26(2010), 81-86.

[9] T.J. Logan: Agriculture Ecosystems & Environment. 46(1993), 223-231.

[10] H. Watanabe, M.E. Grismer: Journal of Hydrology. 247(2001), 183-199.

[11] U. Mander, A. Kull, V. Kuusemets, et al: Ecological Engineering. 14(2000), 405-417.

[12] Y.K. Li, T.W. Xu, Z.Y. Ouyang, et al: Journal of Applied Polymer Science. 113(2009), 3510-3519.

[13] M. Benhur, J. Faris, M. Malik, et al: Soil Science Society of America Journal. 54(1989), 1173-1177.

[14] S.D. Bao: Analysis of Soil Characteristics (China Agriculture Press, China 2005). (in Chinese) [15] Y.G. Han, P.L. Yang, H.L. Liu, Y.G. Bi: Journal of Soil and Water Conservation. 19(2005), 178-183. (in Chinese).

[16] X.Y. Li, P.L. Yang, S.M. Ren, et al: Transactions of the Chinese Society of Agricultural Engineering. 25(2009), 78-81. (in Chinese).