Effects of Different Level Compaction on the Physicochemical Characteristerics of Soil and Crop Growth

The physicochemical characteristics of soil and crop growth are measured after 1 to 10 times compacted with large and small wheeled tractor operated on the sowing land. CK is uncompacted land; Meanwhile experiments after different compaction at porosity of 58%, 52%, 46% and 40% were carried out to determine soil physicochemical parameters. The research shows that the different level compaction got systematic accumulated effects of it. And it provides basis for application of no-tillage, conservation tillage and reduced inter-cultivation.