Funding for this research was provided by:
the National Science and Technology Support Program (2012BAD26B04)
the National Natural Science Foundation of China (31272654)
Modern agricultural industrial technology system (CARS-49)
Article History
Received: 20 March 2018
First Online: 17 September 2018
Compliance with Ethical Standards
:
: On behalf of all authors, the corresponding author states that there is no conflict of interest.