In 1889, the Americans Best designed and manufactured the first by a steam engine-driven self-propelled combine, one day up to harvest more than 50 hectares of farmland. Since then, they have been born by the internal combustion engine-driven self-propelled combine.
In the 1920s, combine first in the United States the use of large-scale wheat growing areas, and then quickly extended to the Soviet Union, Canada, Australia and countries in Western Europe.
At present, the combine is an indispensable field operating agricultural machinery. Its wheat harvest, artificial than the general reduction in the harvest threshing loss of 5 to 8%, and a large number of labor-saving. A large-scale grain combine can be a day of wheat harvest 400 to 500 acres
