DEVELOPMENT OF SUGAR CANE PLANTER

为发展南井首岛、鹿儿岛县、冲绳县主要作物甘蔗栽培的机械化系统，对甘蔗二芽苗自动播种机进行了开发研究，取得了以下成果：1、甘蔗二芽苗自动播种机；甘蔗二芽苗切苗装置的研制与性能：在高速切割器上附加一个塞子，以获得脱除植株20cm长度的苗。对于弯曲比小于3的装置，可以连续切割2 ~ 3个排料装置。扦插苗20cm<正负bb0 ~ 2cm，每小时（2.2h/10a）垂直扦插1500株，几乎所有苗苗状况良好，无细小的spl2。甘蔗苗木拔节装置研制及性能：拔节装置采用长30cm、直径20cm的两个平行聚氨酯辊。当外表面轧制速度为10.5 ~ 11.5cm/s，辊间隙为16mm，振动比为6c/s时，拔插速度为0.4 ~ 0.6 m/s时拔插装置性能最佳。2 .未见损伤，幼苗生长方向良好。栽植装置的研制及性能：在抽拔装置下，研制了一种栽植装置，该栽植装置采用通道附输送机输送每株苗，并将苗落在苗床上。该装置在振动速率为6 ~ 15c /s，振动幅值为12mm时具有良好的调平性能，在任何工作速度下，拔料率均为104 ~ 106%。种植精度和种植量：最终种植率98%，种植深度18.0cm，种植间距3.0cm，计算田容量22.5a/h，苗位良好。由此可见，所研制的甘蔗种植机在田间实际使用中具有足够的能力。期望对拉拔辊的耐久性进行进一步的研究。

For the development of the mechanization system in sugar cane cultivation which is one of the main crop in Nansei-shotou islands, Kagoshima prefecture and Okinawa prefecture, automatic planter of sugar cane seedling with two germs was developed and researched and the following results were obtained.1.Development and performance of cutting device for sugar cane seedling with two germs : To obtain seedling in 20cm length from detrashing plant, a stopper was attached to high speed cutter. For the plant of bending ratio under 3, two to three detrashing plant could be cut continuously. The cut seedlings were 20cm<plus-minus>2cm and 1500 pieces per hour (2.2h/10a) were cut vertically in section and almost all seeding were in good condition without fine spl2.Development and performance of draw out device for sugar cane seedling : Two parallel polyurethane rollers with 30cm in length and 20cm in diameter were used for draw out device. At the rolling speed of 10.5 to 11.5cm/s on outer surface, roller clearance of 16mm and the vibration ratio of 6c/s, the draw out device showed best performance for the planting velocity of 0.4 to 0.6 m/s. Any damage was seen and the direction of the seedlings were good.3.Development and performance of planting device : Under the draw out device, planting device was developed which transport each seedling with channel attached conveyer and seedlings were dropped on the seeding bed. This device showed a good leveling performance at vibrating rate of 6 to 15 c/s and vibrating amplitude of 12mm and the draw out ratio of 104 to 106% seemed to be best at any operating velocity.4.Planting accuracy and capacity : The final planting ratio was 98% with planting depth 18.0cm, planting pitch 3.0cm and calculated field capacity 22.5a/h and seedling were ina good posture. With these results, the developed sugar cane planter seemed to have enough capability in actual usage on the field. Further resaech about the durability of the draw out roll is expected.