The first is to consider the scale of the land: if the plot is small and the operation object is scattered planting one by one, the purchase of small and medium-sized combine harvesters should be the main focus. If the land is contiguous and regionalized planting is implemented, large and medium-sized combine harvesters can be used. Usually, a hanging wheat combine harvester can be purchased for a land scale of about 35 hectares, a medium-sized self-propelled combine harvester can be used for a land scale of about 70 hectares, and a large self-propelled combine harvester can be used for a scale of more than 100 hectares.

The second is to consider the use of the purchased machine: if it is purchased for self-use, it only needs to refer to the local production conditions, and it can be equipped according to the workload. , According to the current production and management system and productivity development level in my country’s rural areas, it is generally better to use medium-sized self-propelled harvesters.

The third is to consider economic strength: if the income is high and the operation is mainly in relatively developed areas, the self-propelled large and medium-sized combine harvester should be the best choice, and if the income is low, the hanging combine harvester can be selected , and consider replacing it later.

Fourth, consider agronomic support: the selected model should be adapted to the local planting system. For example, the crawler-type combine harvester should not be used in areas where intercropping and intercropping are practiced.

The fifth is to consider the quality of service: combine harvesters are agricultural machinery with complex structures, and must be safe and reliable.