Studies on Combined Drawn and Rotating Tillage Implements (III)

Abstract

The power requirement of tillage were measured by using the small tractor attaching the drawn tillage tool in front of rotary tilling device, varying tool shape and manner of tool movement. The characteristics of the combination tillage were summarized as follows:
(1) Better results were obtained when the cutting depth of the drawn tillage tool was 70% of the cutting depth of the tine, its angle of inclination was about 15°-20°, and its share length was about 12.5-15cm.
(2) The performance of the combination tillage using simple inclined tillage tool was generally far better than that using the vertical tillage tool,
(3) For the same pulverizing effect, the total power requirement in the combination tillage was about 0.7-0.8 times as large as that in the rotary tillage.