The Effect of Working Speed on Indices Used for the Evaluation of Seedbed Conditions  

作　　者：I. G. Argyrokastritis A. E. Natsis 

机构地区：[1]Faculty of Water Resources Management, Department of Natural Resources Development and Agricultural Engineering, Laboratory of Agricultural Hydraulics, Agricultural University of Athens, 75 lera Odos Str., Athens 11855, Greece [2]Faculty of Agricultural Engineering, Laboratory of Agricultural Machinery, Department of Natural Resources Development and Agricultural Engineering, Agricultural University of Athens, 75 Iera Odos Str., Athens 11855, Greece

出　　处：《Journal of Agricultural Science and Technology(B)》2011年第3期385-391,共7页农业科学与技术（B）

摘　　要：Crop establishment largely depends on the methods of tillage for seedbed preparation. Seedbed conditions and related problems have recently attracted considerable interest for research. The intensity of the soil compaction achieved because of tillage is related to the working speed of the implement used. The effect of working speed on indices used for the evaluation of seedbed preparation （index of soil texture, actual tillage depth, soil bulk density and the proposed index of leveling） were investigated by applying four different systems of tillage and using different tillage implements. The relationships of the indices investigated to working speed are also presented graphically for all tillage implements used. All relationships were found to be linear with the working speed and the corresponding coefficients of determination were very close to unity. Useful conclusions, which may be used by extension services for the selection of the proper working speed of the implements used for seedbed preparation, are reached. Finally the general conclusion is that reciprocating harrows may be introduced into energetic tillage systems for seedbed preparation.

关 键 词：Seedbed preparation working speed tillage implements. 

分 类 号：S532[农业科学—作物学] S812