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[1]LI Fucheng,HUA Xiaoye,HUANG Qiang.Effects of Tillage Depth on Tillage Erosion by Rotary Cultivator Plough on the Steep Land in Purple Soil[J].Research of Soil and Water Conservation,2016,23(04):1-5.

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Effects of Tillage Depth on Tillage Erosion by Rotary Cultivator Plough on the Steep Land in Purple Soil

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 04 Page number: 1-5 Column: Public date: 2016-04-28

Title:: Effects of Tillage Depth on Tillage Erosion by Rotary Cultivator Plough on the Steep Land in Purple Soil

Author(s):: LI Fucheng¹, HUA Xiaoye¹, HUANG Qiang²; 1. College of Resources & Environment, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China;
2. Mianyang Environmental Monitoring Center, Mianyang, Sichuan 621010, China

Keywords:: tillage erosion; tillage depth; magnetic tracer; rotary cultivator; soil degradation

CLC:: S157.1

DOI:: -

Abstract:: This study was implemented in purple soil regions of Sichuan. To evaluate the effect of tillage depth on tillage erosion by rotary cultivator plough, the magnetic tracer was used to label experiment plots of soil to quantify soil translocation and soil flux due to tillage. Three tillage depths of 8, 10 and 12 cm were set and seventeen plots were established for each tillage depth on a series of hillslopes with slope gradients ranging from 3.43% to 20.97%. The results showed that net soil displacement distances under different tillage depths were significantly different (p=0.007) and increased with tillage depth. Soil displacement distances were positively correlated to slope gradients for all treatments. Especially, the coefficient was gradually improved with the increasing tillage depth. As tillage depth increased from 8 cm to 10 cm and 10 cm to 12 cm, tillage erosion rate increased by 77% and 49%, respectively. Consequently, tillage depth was one of the critical factors affecting tillage erosion by rotary cultivator plough. Because tillage erosivity markedly enhanced with the increase of tillage depth, reasonably regulating the tillage depth plays an important role in prevention and control of soil degradation in the area of purple soil.

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