Promotion of equipment efficiency
It has been a worldwide trend to cost down rice cultivation by using large machineries.
However, it is still a problem for the mediumor small-area rice farming bodies to introduce large machineries as the lengths of the field blocks are too short, thus, the expansion of management scales seems to be a must for these areas (Fig. 6). Nonetheless, accompanying problems such as dense population, as well as over-dissection of landownership, have shown it to be a rather difficult task.