In order to grasp the effect of the increase of field lot in size by different farm machinery and farm work machinery, the relation between field lot scale and the effective field effeciency is analyzed by the survey of field working. And from the analysis the effective field capacity of every field lot scale were roughly estimated by giving the operating speed and the farm work machinery width.
The results are as follows:
1) The effect of the increase of field log scale was recognized from the relation between field lot scale and the effective field efficiency. The relation between field lot scale and the correction value, the effective field efficiency corrected to the coefficient of field form corresponding to 1 was corelated strongly.
2) The effective field capacity of every field lot scale was roughly estimated by giving the operating speed and the farm work machinery width. From the foregoing result, the calculation of area of burden for the increase of production scale was possible. In order not to make an excessive calculation of the area of burden, it is preferable that the coefficient of field form remains 1.
The effective field capacity obtained from effective field efficiency conformed to standard effective field capacity.