In most cultivation systems, most of the weeds in the ricefield are pulled out and discarded.
(most of the weeds in the ricefield; are pulled out; L:In most cultivation systems) (most of the weeds in the ricefield; discarded; L:In most cultivation systems)
most of the weeds in the ricefield most of the weeds in the ricefield
are pulled out discarded
L:In most cultivation systems
L:In most cultivation systems