Research on the degradation of tropical arable land soil: Part I. The soil acidification during the last two decades in Hainan, China

Dengfeng Wang; Zhiyuan Wei; Zhiping Qi

doi:10.1117/12.2019695

19 March 2013 Research on the degradation of tropical arable land soil: Part I. The soil acidification during the last two decades in Hainan, China

Dengfeng Wang, Zhiyuan Wei, Zhiping Qi

Author Affiliations +

Proceedings Volume 8762, PIAGENG 2013: Intelligent Information, Control, and Communication Technology for Agricultural Engineering; 87620I (2013) https://doi.org/10.1117/12.2019695
Event: Third International Conference on Photonics and Image in Agriculture Engineering (PIAGENG 2013), 2013, Sanya, China

Abstract

Decreasing of soil pH leads to change the distribution or mobility of soil heavy metals, particularly in tropical arable lands which had relatively lower pH, where the distribution and mobility of heavy metals in soil-crop systems are extremely sensitive to soil acidification. The purpose of this study is to analyze the distribution of arable land soil pH of Hainan in 2005 and the 1980s. The results indicate that the soil pH was 5.20 in 2005 and 5.72 in the 1980s. Soil acidification areas mainly distribute in Wenchang and Haikou. The application of chemical fertilizers is probably the main reason for arable land soil acidification in Hainan. Several measures can be taken to control arable land soil acidification, including increasing organic fertilizer and application of the alkaline fertilizer.

Citation Download Citation

Dengfeng Wang, Zhiyuan Wei, and Zhiping Qi "Research on the degradation of tropical arable land soil: Part I. The soil acidification during the last two decades in Hainan, China", Proc. SPIE 8762, PIAGENG 2013: Intelligent Information, Control, and Communication Technology for Agricultural Engineering, 87620I (19 March 2013); https://doi.org/10.1117/12.2019695

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