No. As a workaround you can multi-select and enable frame blending on multiple clips at once, or
nest your timeline before enabling frame blending.
If under export i will select Use Frame Blending, it will automatically apply frame blending to all the clips ?
The "Use Frame Blending" check box in the Export Settings dialog only functions as a master control when the frame rate used for export is different than the frame rate of the sequence being exported. If both frame rates are the same, then the clip setting for Frame Blending controls.