Fig. 6: Conceptual overview of the variation of wheat aphid and its associated factors between China and Europe during 1970 to 2017.

This map was created by using the ArcGIS 10.3.1 software (ESRI, Redlands, CA, USA, http://www.esri.com/).

This map was created by using the ArcGIS 10.3.1 software (ESRI, Redlands, CA, USA, http://www.esri.com/).