Yerli yapım bir rototifllerin toprağa yaptığı fiziksel etkileri iş başarısı ve güç tüketimi üzerine bir araştırma
Başlık çevirisi mevcut değil.
- Tez No: 23143
- Danışmanlar: DOÇ. DR. FARUK ÖZGÜVEN
- Tez Türü: Yüksek Lisans
- Konular: Ziraat, Agriculture
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 1992
- Dil: Türkçe
- Üniversite: Çukurova Üniversitesi
- Enstitü: Fen Bilimleri Enstitüsü
- Ana Bilim Dalı: Tarım Makineleri Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 95
Özet
Özet yok.
Özet (Çeviri)
79 7. SUMMARY The fundamental objective of mechanical manipulation of the soil (tillage) in production of agricultural crops is to produce soil conditions favorable to growth by changing soil aggregate size and physical characteristics of the soil. In this study the influence of the conventional tillage system (plough + ofset diskharrow+ scrubber) and rotarytiller on the physical properties of soil, the performance and power requirement for each system have been researched in order to choose appropriate methods for tillage. The research has been conducted in two soil condition (dry and humid) at the medium texture soil which is called Menzilat loam. Before and after tilling, soil penetration resistances have been measured and undistrubed soil samples have been taken away. Bulk density, porosity, moisture and hydraulic conductivity has been measured in the undistrubed soil samples in the labratory. The fuel consumption, field work capacity and energy requirements of each implement used in the tillage system have been examined during field experiments. The clod-size distribution is a major consideration in the preparation of a seed bed; thus, it is a measure of effectiveness of a tillage tool in preparation of a seedbed. Therefore, in this study the effect of tillage system on the clod size distribution has been determined. In the field work, draft requirement for conventional system has been measured by using dynamometr in the double-tractor measuring method. In while working with the rotarytiller, P.T.O power requirement has been calculated by using the torqumetre.Results have showed that conventional tillage system caused high penetration resistance in dry and humid soil in proportion to rotarytiller. According to untilled soil condition, soil bulk densily has decreased by both tillage system, but rotarytiller has caused lower bulk density and it has not been influanced under tillage depth. Surface moisture content of soil that tilled with rotorytiller decreased quickly. Apart from under tilling part of the soil rotorytiller has increased soil hydraulic conductivity. Both tillage system have caused proper clod-size distribution, but the clods have been finer by rotorytiller. The rpm of the rotor of the 1600 type rotarytiller at the constant revolution of P.T.O (540 rpm) can be changed by gear pairs of the variable gear unit Therefore by increasing rpm of the rotor and decreasing working speed of tractor the clods have been finer.. Unit power requirements of the rotarytiller have changed according to the working speed and depth. Also the power reqtdrment has increased by increasing soil moisture. On the other hand, at the constant revolution of P.T.O and tractor speed gear, increasing rotor rpm has increased the tractor working speed. According to the research, total power requirement equivalant to P.T.O power for conventional tillage system has been more than twice P.T.O power requirement of rotarytiller. Conventional system consumed more fuel per hectare and it's work capacity has been lower. Conventional tillage system should be improved because of affecting the physical condition of soil almost negatively and having low performance.
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