@ahmedmurtaja You must apply to the Embassy of the Netherlands this time as the reason for applying for the visa is different from your last application.
It does not matter what is stamped on your passport, Schengen countries share biometric information so the Netherlands will be aware of your last refusal.
You need to show ties to Qatar your birth certificate, your marriage certificate, childs birth certificate, your title deed or rental agreement for your home. Letters from your employer, stating your job salary length of employment and who will be paying flights, hotel food etc. Your bank statements and payslips.
You do not say why your previous visa was refused last time but you need to look at the last refusal and apply again with better documents. I suggest you wait to see the out come of the Netherlands visa before you apply to Spain.
@mehdi If your wife is on a low income she could ask a friend or family member to be a joint sponsor. Very few people are willing to accept financial responsibility for someone they do not know from a foreign country. Of course your wife has to show her income over the years as this helps the US immigration service to decide if she is able to sponsor you. Perhaps your wife should get a second job.