The self-propelled windrower is a special type and purpose harvester. It cuts down the wheat stalks and spreads them on the stubble to become the stalks that overlap the ears to facilitate the drying of the grain harvesting machinery. It can also be used For harvesting forage.

Wheat and rice are cut down some time before harvest. In order to make wheat, rice and other crops lose part of their water, it will be easier to harvest and store after a period of time. At the same time, cutting down some rice plants in advance can also effectively alleviate the harvest pressure of rice, reduce water content, and improve grain quality.

The windrower is suitable for wheat harvesting operations where the maturity is inconsistent, there are many weeds in the field, or due to machinery, labor arrangements, etc., which need to be cut and laid in advance during the wax maturity period, so as to extend the wheat harvest period and improve the utilization of the grain combine harvester Rate. After being ventilated and dried in the sun, the wheat ears have the effect of increasing weight after maturing, which can increase the yield of wheat.