さとうきび植付け作業の機械化に関する研究 （２） 植付け機の開発とその性能について

Abstract

In order to mechanize planting operations in the cultivation of sugar cane, a one-row tractor-mounted planter incorporated a feeding mechanism of two buds-seedcane was developed and the planter performance was examined for practical use. The results were follows;1) With planting speeds between 23m/s and 63m/s, the proper planting rates were between 94% and 98%.2) The planting rates of plural seedcane were between 1% and 2% at any planting speed.3) The planting rates of slant seedcane were between 1% and 4% and increased slightly with increasing planting speed.4) The planting spaces were between 25cm and 27cm at any planting speed.5) The planting depths were between 18cm and 21cm at any planting speed and therefore the accuracy is far better than manual operation.6) The performance of developed machine at the planting speed of 52cm/s was 98.2% actual planting rate (plural seedcane 1.3% and slant seedcane 3.0%), spacing 25.6cm, depth 20.6cm and actual planting capacity of 10.1a/h. This capacity is about 11 times of manual operation capacity.7) The damage and wrong planting pause which could hinder sprouting of the two buds-seedcane were not recognized and therefore the planter development can be considered as one of the breakthrough in sugar cane planting mechanization.8) Further research is required in preparations of two buds-seedcane, construction of the holding box and design of the durable feed roll.