Squash vine borers do not do cucumbers so you have another problem. I
would suspect striped cucumber beetles. It also sounds like you need a
soil test and some amendments to improve the quality of your soil. You
can take a soil sample to your Agricultural Extension Agent and get an
analysis with recommendations. Plowing under or removing debris will
help with the insects, but not complete. If you have no objections to
using insecticides, These will give good control.