Sudanese Foreign Minister Lam Akol said the international community should instead provide more funds to African Union troops already in the region.
Around 6,000 AU peacekeepers are in Darfur but the regional grouping has warned that it is severely underfunded, and money may run out as soon as March.
United Nations Secretary General Kofi Annan said the situation has deteriorated beyond the realm of African peacekeepers and it is time for the UN to step in.
Mr Annan said a new force would need air support and sophisticated equipment, according to BBC Online.
The head of the world body said rapes and murders are continuing unabated in the war-wracked region, where around two million people have been forced to flee their homes in the past three years.
AU force a "failure"
The UN special envoy for Sudan, Jan Pronk, has also urged deployment of a robust peacekeeping force.
Speaking to the Security Council, he said at least once a month groups of up to 1,000 militia on horseback kill and terrorise local people.
"Looking back at three years of killings and cleansing in Darfur we must admit that our peace strategy so far has failed," he said.
He also called for sanctions against those responsible for the violence that has left as many as 300,000 dead.
UN experts have recommended a freeze on assets and a travel ban on those targeted in line with measures voted by the UN Security Council 10 months ago but never acted upon.
Mr Pronk said the proposed UN force, which has yet to be approved by the council, should remain at least three to four years after the signing of a peace agreement and should have guaranteed funding.
His comments come a day after Mr Annan said the world body is readying contingency plans to deploy a quick-reaction force to take over from the AU peacekeepers.
But the move would require Sudanese approval, something which Mr Akol indicated would not be forthcoming.
"Anybody who wants to come has to negotiate with the Sudanese government," he told the BBC's Focus on Africa program.
"The AU force is doing a good job. The only thing they are lacking is money," he said.
"If the UN is serious about doing a good job in Darfur, why not give the money to the AU?"
In December, the AU said it needed over $US130 million ($A173m) in new contributions to meet the $US465m ($A620.5m) it needs for peacekeeping operations in the current financial year that ends in May.
Crisis could migrate: UN
The UN High Commissioner for Refugees on Thursday warned the crisis in Darfur could spill over into other parts of Africa, and urged the international community to recognise the threat.
"Darfur is in my opinion the most pressing political and humanitarian problem that we have in Africa today," said Antonio Guterres, speaking in Geneva.
"It can have a very dramatic impact not only in Sudan but in the whole region -- and an impact in Chad that can be extremely negative," he said.
Last week, Chad accused Sudanese militias of carrying out three attacks in the east of the country and accused Sudan's government of pursuing a policy of aggression against Chad.
The Chadian government declared a "state of war" with Sudan last month following a rebel attack on a border town.
The Darfur conflict broke out in early 2003 when rebel groups began fighting what they say is the political and economic marginalisation of the region's black African tribes by the Arab-led regime in Khartoum.