Funding for this research was provided by:
Modern Agro-industry Technology Research System (CARS-44)
the Agricultural Science and Technology Innovation Program in China (CAAS-ASTIP-2015-IAR)
the National Project for Updating Beekeeping Industry of China (none)
Article History
Received: 12 May 2020
Accepted: 12 October 2020
First Online: 31 October 2020
Compliance with Ethical Standards
:
: Dandan Qi declares that she has no conflict of interest. Chengying Ma declares that she has no conflict of interest. Wenwen Wang declares that she has no conflict of interest. Licui Zhang declares that she has no conflict of interest. Jianke Li declares that he has no conflict of interest.
: Publication has been approved by all individual participants.
: This article does not contain any studies with human participants or animals performed by any of the authors.