The outgoing state director of the WA Liberal Party has called on the Nationals to rule out forming a government with Labor after the next state election in March 2017.

Ben Morton told the Liberal Party state conference in Perth he was shocked when the Nationals contemplated an alliance government with Labor after the 2008 election delivered a hung parliament.

"I was very shocked ... that we had to wait a week for the National party to form government with us," he said.

"I was more shocked when they actually voted not to, but it was vetoed and they actually formed government with us."

Mr Morton said the Nationals believed "leaving the door open" for a deal with Labor was to their advantage, but that he disagreed.

"The election results since 2008, in my view, show that the facts are that that strategy does not work for them," he said.

Mr Morton said the parties worked together effectively in government, with senior party members Terry Redman, Mia Davis and Colin Holt serving as key ministers in the Barnett Government.

But he said he was tired of the continuing inter-party rivalry.

"The truth is, I'm absolutely sick of it. I'm sick wasting our time and energy fighting, in a campaign against a party that we actually deliver good government with, a party that we actually sit around the Cabinet table with," he said.

Mr Morton said the parties should focus on Labor, not themselves.

Nationals leader Terry Redman. ( ABC News )

"I ask Terry Redman and the National Party just to talk straight and say it clear. Say it very clearly that under no circumstances will the WA Nationals enter into discussions or do a deal with Labor to form government after the next election," he said.

Mr Morton's call for unconditional Nationals support prompted a swift rebuke from Nationals leader Mr Redman, who was attending the Nationals state conference in Kalgoorlie.

He said the Liberals should focus on serving West Australians.

"I find it really interesting that at the Liberals state conference today they're talking about the Nationals party ... and at the Nationals state conference today we're talking about Western Australia and what we can do to improve the outcomes for regional West Australians," he said.

"Quite frankly they should focus on the job."

Mr Redman refused to rule out aligning with the Labor party.

He said the Nationals had enjoyed an alliance with the Liberal Party but would remain independent in pursuit of the best deal for regional WA.

"We will look at the leverage we're able to apply so we continue to get a good outcome for regional West Australia," he said.

"I don't think the relationship is fracturing, I'm making the point that we're an independent party, we'll make our own calls going forward."

Mr Redman said he was surprised Mr Morton chose to make it a key element of his conference speech.

Nationals push for review of state agreements with miners

The Nationals are preparing for a concerted push to have state agreements with mining companies reviewed.

Successive WA governments have used state agreements since the 1950s to set conditions on which mining companies must provide and deliver, in exchange for the right to mine and sell the state's mineral wealth.

Mr Redman said many of the provisions and concessions contained in the agreements were outdated.

"The point we're making is that the state agreements are quite old and there's a belief out there that there actually is not an even playing field between the junior miners and the big end of the sector," he said.

"It's clearly touched a nerve and we've talked about agreements that have been in place for such a long time.

"The iron ore or the gas in the ground actually belongs to the people of Western Australia, so why shouldn't we from time to time have a look at agreements that were put in place many, many years ago."

The Chamber of Minerals and Energy has strongly opposed any review of the agreements.

Mr Redman said the move should not be seen as a threat, but rather an attempt to provide greater visibility on what each agreement contains.

"I don't think that's something that those companies should be frightened of and certainly the Nationals are not against the resources sector," he said.

"I don't see it should be a taboo area."