This could be explained by the fact that the gathering machine only collects loose rice straw
and can thus move continuously without needing to stop to unload bales like other balers do.
The baler pulled by a tractor has a higher baling capacity because it leaves the
bales in the field, whereas self-propelled balers do the added work
of taking the bales to the side of the field. The self-propelled baler,
having the lowest capacity of 0.87 t h−1, can cover about 10 rounds
of labor (8 for gathering and 2 for handling). In addition to that,