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[1]ZHAO Yun,MU Xing-min,WANG Fei,et al.Impact of Conservation Tillage on Soil Wind Erosion of Farmland Based on Wind Tunnel Test[J].Research of Soil and Water Conservation,2012,19(03):16-19.

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Impact of Conservation Tillage on Soil Wind Erosion of Farmland Based on Wind Tunnel Test

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 03 Page number: 16-19 Column: Public date: 2012-06-20

Title:: Impact of Conservation Tillage on Soil Wind Erosion of Farmland Based on Wind Tunnel Test

Author(s):: ZHAO Yun¹, MU Xing-min^1,2,3, WANG Fei^1,2,3, JIANG Chong¹, LIU Zhen-dong¹, LI Rui^1,2,3; 1. College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China;
3. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

Keywords:: conservation tillage; soil erosion; anti-erosion efficiency; wind tunnel simulation

CLC:: S157.1

DOI:: -

Abstract:: Conservation tillage can reduce soil wind erosion effectively on farmland. Quantitative analysis of the impact of different crop stubble and different straw mulch on wind erosion of loessial soil of Ansai was carried out by wind tunnel experiments in the laboratory. The results indicated that: (1) wheat stubble, corn stubble and straw mulch could reduce soil wind erosion effectively, and anti-erosion efficiency under straw mulch with 4 210 kg/hm² was 95.9% which was the best; (2) the amount of wind erosion had a positive correlation with wind velocity, soil wind erosion increased with the increase of wind velocity, having a sudden increase of the turning point, and the turning point of 30 cm wheat stubble will be significantly lag behind the 30 cm corn stubble and bare soil. The greater coverage of wheat mulch was, the better the efficiency of anti-erosion was; (3) the amount of wind erosion will reduce gradually with the increase of the height, and over 90% of the amount of wind erosion concentrated in the range of 0～36 cm height. The proportion of wind erosion at the height of 0~10 cm would gradually rise with increasing in wind velocity.

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