Studies on the improvement of trafficability by soil dressing in the Jaagaru fields(Department of Agricultural Engineering)
| Autor: | Ueno, Masami, Izumi, Hiromi, Kohda, Yoshihiro, Akinaga, Takayoshi, Goya, Akira |
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| Jazyk: | japonština |
| Rok vydání: | 1982 |
| Zdroj: | 琉球大学農学部学術報告. (29):169-175 |
| ISSN: | 0370-4246 |
| Popis: | 本研究ではジャーガル畑におけるトラクタなどの走行性を向上させる手段の一つとしてニービ客土の効果を実験的に検討した。ニービの混合比を0∿30%の範囲で4水準変えた試験圃場において牽引試験を行い, 牽引力, すべり率, 沈下量などの特性値を比較したが, ニービの混合比との明確な関係は得られなかった。すなわち, 牽引性能に対するニービ混合の効果はほとんどなく, 走行性に限定すればジャーガル畑にニービを客土しても大きな効果は期待できないことを明らかにした。この原因については十分な分析は行えず, 今後の課題として残された。 The trafficability of tractors is very poor in Okinawa's field covered with the Jaagaru soil which is heavy clay. Soil dressing using the Niibi, sandy soil, has been expected as one method to improve the physical properties of the Jaagaru soil, the trafficability of tractors and the soil tilth. It was the purpose of this paper to examine an effect of this soil dressing. Some traction tests by MF178 tractor (power : 78PS/1800rpm, weight : 3125kg), were done in the four test fields that were changed the volum content of Niibi to 0%, 10%, 20% and 30%. There were no remarkable relationships between the volume content of Niibi and draft, slippage and sinkage. So, it was concluded that the trafficability of tractors in Jaagaru fields was not improved by the soil dressing. The reasons why the effect of soil dressing to the trafficability was so small remained as a problems to be solved. 紀要論文 |
| Databáze: | OpenAIRE |
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