GENEVA  The Russian foreign minister, Sergey V. Lavrov, on Tuesday presented a Russian-Chinese draft treaty banning weapons in space to the United Nations Conference on Disarmament, an idea that was quickly rejected by the United States.

Russia and China have pushed for years for a treaty to prevent an arms race in space, a threat underlined by China last year after it shot down one of its own aging satellites.

Responding to previous American assertions that there is no arms race in space and therefore no need for a treaty, Mr. Lavrov instead submitted a draft on “prevention of the placement of weapons in outer space, the threat or use of force against outer space objects.”

“Weapons deployment in space by one state will inevitably result in a chain reaction,” Mr. Lavrov warned. “And this in turn is fraught with a new spiral in the arms race, both in space and on the earth.”