تاثير نوعين من المحاريث باعماق وسرع مختلفة في اداء الوحدة الميكنية وبعض صفات التربة الفيزيائية

Abstract

Abstract The experiment was conducted to evaluate the effect two plows on some machine mint performance parameters and soil physic properties , at the experiment fields of Babylon . split unit with Randomized complete block design , under three replication 0.05was used in the study. Two plows (mold board plow and disk plow) represent the main plot , three tillage depth (15,20and 25)cm represent sup- plot, and three tractors speed (L3,H1,H2)kmhr represent sup-sup plot, in some performance parameters and soil physic properties , two seasons 20032004and 20042005. (slippage percentage ,practical productivity, field efficiency , fuel consumption ,power losses due to slippage , drawbar power , soil bulk density, soil volume disturbed, soil porosity and soil penetration resistance The experiment results showed the following 1-mold board plow was significant superior compared with disk plow in all study properties two season studies.2-Increase of tractor s speed and tillage depth two season studies. caused an increase of (slippage percentage ,practical productivity, , power losses due to slippage , drawbar power , soil bulk density, soil volume disturbed and soil penetration resistance, decrease other study properties with tractors speed and tillage depth two season studies.3-The interaction between plows and tractor practical speed effect significant in all study properties, slow tractor practical speed(L3)4.248kmhr with plows in two season studies. gave the less mechanism unit aspects and soil physic properties, (slippage percentage ,practical productivity, , power losses due to slippage , drawbar power , specific resistance, soil bulk density, and soil penetration resistance, and soil volume disturbed) decrease fuel consumption , with three speed 6.932kmhr two season studies.4-The interaction between tillage depth and tractor practical speed effect significant in all study properties two season studies. slow tractor practical speed(L3)4.248kmhr and tillage depth 15cm two season studies ,gave the less mechanism unit aspects and soil physic properties(slippage percentage , power losses due to slippage , drawbar power , specific resistance, soil bulk density, and soil penetration resistance and soil volume disturbed), while high tractor practical speed(H2) 6.932kmhr with tillage depth25cm two season studies, gave high to other properties.5-The interaction between plows and tillage depth, effect significant in all study properties two season studies, gave interaction between plows and tillage depth 15cm less mechanism unit aspects and soil physic properties, but it interaction between plows and tillage depth 25cm gave high mechanism unit aspects and soil physic properties, two season studies.6-The interaction between plows with tillage depth and tractor practical speed, effect significant in all study properties two season studies slow tractor practical speed(L3)4.248kmhr and tillage depth 15cm with moldboard ,gave the less mechanism unit aspects and soil physic properties(slippage percentage , power losses due to slippage , drawbar power , soil bulk density, soil penetration resistance and soil volume disturbed),but it tillage depth 25cm with high tractor practical speed(H2) 6.932kmhr and disk plow high to study properties, two season studies.