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Effect of Mechanized Ridge Tillage with Rice-Rape Rotation on Paddy Soil Structure

Author

Listed:
  • Lanting Li

    (College of Resources and Environment, Southwest University, Chongqing 400715, China
    Key Laboratory of Arable Land Conservation (Southwest China), Ministry of Agriculture and Rural Affairs, Chongqing 400715, China)

  • Jiangwen Li

    (College of Resources and Environment, Southwest University, Chongqing 400715, China
    Key Laboratory of Arable Land Conservation (Southwest China), Ministry of Agriculture and Rural Affairs, Chongqing 400715, China)

  • Chaofu Wei

    (College of Resources and Environment, Southwest University, Chongqing 400715, China
    Key Laboratory of Arable Land Conservation (Southwest China), Ministry of Agriculture and Rural Affairs, Chongqing 400715, China
    National Base of International S & T Collaboration on Water Environmental Monitoring and Simulation in Three Gorges Reservoir Region, Chongqing 400715, China)

  • Chaoxian Yang

    (College of Resources and Environment, Southwest University, Chongqing 400715, China
    Key Laboratory of Arable Land Conservation (Southwest China), Ministry of Agriculture and Rural Affairs, Chongqing 400715, China)

  • Shouqin Zhong

    (College of Resources and Environment, Southwest University, Chongqing 400715, China
    Key Laboratory of Arable Land Conservation (Southwest China), Ministry of Agriculture and Rural Affairs, Chongqing 400715, China
    National Base of International S & T Collaboration on Water Environmental Monitoring and Simulation in Three Gorges Reservoir Region, Chongqing 400715, China)

Abstract

Ridge tillage is one of the essential tillage methods in China. It affects the soil structure by altering the soil-water environment. With the rapid development of agricultural mechanization, the mechanized ridge tillage technology that combines modern mechanized agriculture with conservation tillage has become a pertinent agricultural production technology in the hilly regions. However, to date, the effects of mechanized ridge tillage on soil structure have garnered little attention. In this study, a field plot experiment involving the following four treatments: conventional tillage with rice and winter fallow (CK1), conventional tillage with rice-rape rotation (CK2), wide ridge tillage with rice-rape rotation (BT), and narrow ridge tillage with rice-rape rotation (RT) was conducted to study the effects of mechanized ridge tillage with rice-rape rotation on soil aggregate stability and soil porosity. The results indicated that mechanized ridge tillage could reduce the porosity of pores > 30 μm in diameter and increase the porosity of pores < 0.5 μm. Furthermore, mechanized ridge tillage could increase soil aggregate stability; the order of average mass diameter and geometric average diameter was RT > BT > CK2 > CK1. The BT and RT treatments could increase the agglomeration degree of the soil particles, which followed the order of RT > BT > CK2 > CK1. Therefore, mechanized ridge tillage with rice-rape rotation is effective in enhancing soil structure.

Suggested Citation

  • Lanting Li & Jiangwen Li & Chaofu Wei & Chaoxian Yang & Shouqin Zhong, 2022. "Effect of Mechanized Ridge Tillage with Rice-Rape Rotation on Paddy Soil Structure," Agriculture, MDPI, vol. 12(12), pages 1-12, December.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:12:p:2147-:d:1002608
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