Funding for this research was provided by:
National Natural Science Foundation of Chin (41362014)
National Major State Basic Research Development Progra (2014CB744703)
Scientific Research Projects of Gansu Academy of Science (2013JK-06)
Scientific Research Projects of Gansu Academy of Science (2017JK-01)
Innovation Team Project of Gansu Academy of Science (CX201801)
Scientific Research Project of Gansu Provinc (18JR3RA251)
Scientific Research Project of Gansu Provinc (1209FCMA012)
Article History
Received: 25 March 2018
Accepted: 2 May 2019
First Online: 8 May 2019