Frontiers of Agricultural Science and Engineering, 2019, 6(4): 311–312
The original version of this article unfortunately contained a project duration mistake. The correction is given below:
The duration “2009–2011” (Page 312, line 4) of Sino-German research collaboration project should be “2008–2012”.
Acknowledgements We thank Dr. Marco Roelcke (University of Hohenheim, Germany) for finding the mistake and requesting a correction.
The online version of the original article can be found at https://doi.org/10.15302/J-FASE-2019285
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The Author(s) 2019. Published by Higher Education Press. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0)