Effects of Direct Drilling on Soil Trafficability： Exploratory Results  

作　　者：Mokhtar Bouchendira Khelifa M'Hedhbi Belgacem Medyouni 

机构地区：[1]Department of Mechanical and Industrial Engineering, School of Agricultural Engineering and Rural Equipment, Medjez El-Bab9070, Tunisia [2]Technical Center of Cereals, Ministry of Agriculture, Boussalem 8170, Tunisia

出　　处：《Journal of Earth Science and Engineering》2012年第4期205-208,共4页地球科学与工程（英文版）

摘　　要：When applying conservation agriculture based on DD （direct drilling）, soil is rarely disturbed by machinery, but is often subject to vehicle pressure that is frequent and intense. Soil compaction could be deeply modified, and DD can improve soil sustainability during rainy seasons. The technique of cone penetration resistance is still the easiest and most direct way to charaeterise soil compaction distribution of soils. Then measurements of cone penetration resistance were conducted on two typical agricultural soil zones in Tunisia. At the experimental site, soils were submitted to DD during different durations in the context of the conservative agriculture in order to investigate the evolution of compaction measured by a cone penetrometer during different time periods and to describe the trafficability of the tested soils. The results showed that （1） soil compaction increased with time application （years） of DD; （2） soil compaction was affected by soil depth and （3） DD improved the uniformity of soil compaction distribution within soil profile. Consequently, DD seems to improve trafficability of agriculture soils, which makes an easy access to a field during rainy times.

关 键 词：COMPACTION no till agriculture conservation soil penetration cone index portability. 

分 类 号：S727.3[农业科学—林木遗传育种] P634.5[农业科学—林学]