抄録
From the results of time study of works uisng power tiller for tilling and puddling, the effect of the location and feature of field on the working efficiency is considered as follows;
(1) Natural features were divided into three main parts: plain, foot, mount. On three parts, each total time of tilling work per a day is equally 650.4min., but the time of main work (to till a field) and annexed work (to move from field to field) is different between three parts.
(2) The each rate of main work for total time is 60.5% (plain), 59.7% (foot), 45.5% (mount), It is observed that tilling work is more efficient on plain than on foot or mount.
(3) From such a result, it is considered to be given a coefficient of field and a coefficient of natural features. It is sure that they are useful for makiug a plan of work using machines.
