دراسة تقيم بعض مؤشرات الأداء للمحراث تحت التربة ثنائي الأسلحة

Abstract EN

The aim of this study is to evaluated the field performance to sub soiler plow (two tines) by studying the factors which effect its field performance such as cultivation depth and the front speed of tractor and verify its effect on the field performance power of retract , specific resistant and tractor ability.

use four plow depths (20,30,40 and 50 cm) and three front speeds (0.27,0.31 and 0.52 m/sec.)in clay soil.

The results showed increase the draft force with the increasing of plowing depth for all front speeds, the retract draft force increased also with the increasing of front speed, while the specific resistant decrease with the increasing of plowing depth for all forward speed ,the effect of increasing forward speed lead to increase the specific resistant in ratio 34% ,33% ,43% ,and 36% when the forward speed increased from 0.27 to 0.52 at depth (20, 30, 40 and 40 cm) respectively, while the efficiency of plow increased with the increased of plow depth for all front speeds.

Also the ability increased with the increasing of forward speed in ratio(0.38,0.36,0.33and 0.29)when the front speed increased from 0.27 to 0.52 m/sec.

at depths (20,30,40 and 50cm) respectively.