Combine harvester for short is the combine harvester for harvesting crops. It was called Compain in the early 1950s. It can complete the process of harvesting, threshing, separating stalks and clearing debris of grain crops at one time, and obtain grain directly from the field.
Before the emergence of combine harvesters, threshers and mechanical harvesters greatly increased agricultural productivity in the 19th century. This makes it possible to harvest more grain with fewer workers than before. But an invention in the late 19th century further improved this efficiency. Combines harvester and thresher in a whole piece, so that farmers can complete harvesting and threshing with a single operation. Consequently, human and material resources are saved and the burden of farmers is greatly lightened.
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