Abstract
1) In order to evaluate the energy for agricultural work in crop production from the energy standpoint, the supplied energy in custom cultivation for main crop was actually measured. The fuel consumption per 10 ares was 7 to 11l, the difference in crop was little and a lot of energy was required for tilling, requiring improvements in works of this process.
2) By performing the tillage operation, fertilizing and sowing operations simultaneously like the rotary seeder, the energy was saved by about 30% in this process, being effective,
3) In the partial cultivation system, in which only the sowing drills are tilled beltlike by 50% and the untilled portion is cultivated during cultivation, about 30% energy was saved. The development of the fly earth utilization partial cultivation fertilizing and sowing machine which generally uses a cultivator increases the sowing accuracy and as a result, the growth of farm product and crop were not reduced.
4) In the super partial cultivation in which the tilling width is exceedingly narrow and the simple cultivation using a disc harrow, these were effective for expansible, soft soil, however there was a possibility of lowered growth for farm product in other soils.
5) For the guttering sowing by the developed single disc drive type seeder, the required power is about 1/10 times as much as that of the all-out cultivation seeder, and it was effective in stabilization of sprouting seeding under wet soil condition for converted field soybean and the like. There were more advantageous points than the all-out cultivation.
