Funding for this research was provided by:
Natural Science Foundation of Heilongjiang Province of China (QC2017020)
Postdoctoral Science Foundation of Heilongjiang Bayi Agricultural University
Heilongjiang Bayi Agricultural University Support Program for San Heng San Zong (ZRCQC201904)
Article History
Received: 30 October 2019
Accepted: 27 December 2019
First Online: 16 January 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.