Is it possible to add a QML item to the window created in mainwindow.ui form?

Question

I have created a simple Qt application. I made the application interface in the mainwindow.ui form using the design mode. Now, I would like to add a places map to my program. I know I can do this using QML. However, I would like the map to be displayed in the same window as the other elements that I have already created without using QML. Is it possible to add this map to the same window or do I have to do something else?