As per new law, you can file only a Visit Visa for 6 months but not a residence Visa. As discussed on the threads before (please try to search on this site), the minimum requirements for you to sponsor your wife is a basic Salary of QR 7,000.00.

What I can suggest is that, your parents can help in obtaining a family residence visa for your wife(as their legal daughter). A final approval is still rests on Captain of Immigration upon submission of related documents with your parents and you as the full sponsor.

Goodluck and congratulations on your forthcoming wedding.
Wish you luck and happiness!!!