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. 2015 Nov 11;15(11):28314–28339. doi: 10.3390/s151128314

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© 2015 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).

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Spatial distribution maps of soil attributes in the farmland. (a) The spatial distribution of the EC of soil; (b)The spatial distribution of the OM content of soil; (c) The spatial distribution of the TN content of soil; (d) The spatial distribution of the AP content of soil; (e)The spatial distribution of the AK content of soil.