I think No. You are on a family status. But unfortunately the Min. has a salary requirement of QR 7k. You have to reach that salary bracket first before you can sponsor your wife. The other way to let your wife comes here is :
1. To apply your wife for a tourist visa (apply in any hotel). Once here, let her apply to any companies who can sponsor her for a working Visa (this is a little bit expensive since you'll pay her ticket)

2. Submit ur wife CVs to any companies. Once directly hired she can process her papers in ur home country & enter Qatar thru a working visa (this way the company will shoulder her airfare).

I hope this helps!