Tractor is core of agricultural machinery industry,and tractive performance is one of important performance of tractor.Through research on tractive performance of OECD code test reports,it was shown that,under four-wheel drive and no counterweight conditions,85.1%of tractors have a maximum traction ratio greater than 400 N/kW,86.5%of tractors have a maximum traction power percentage greater than 75%,and average maximum traction ratio fuel consumption was 274.59 g/(kW·h).Heavy tractors have bet-ter traction performance than large tractors and also better than medium-sized tractors.94.6%of tractors have a minimum usage specific mass greater than 44 kg/kW,and a minimum usage specific mass of 50 kg/kW to 55 kg/kW was optimal range for maximizing tractor traction performance.Different gear shifting methods affected traction performance of tractors.The maximum traction ratio of continu-ously variable transmission tractors was greater,and the maximum traction ratio fuel consumption of power shift transmission tractors was lower.Both traction performance was better than mechanical transmission tractors.
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