Soil Compaction Mechanism and Improvement in Farmland

Jinfu Fang, Defang Zeng (), Xu Tian and Krishna Bhakta Duwal
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Jinfu Fang: School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan 430070, China
Defang Zeng: School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan 430070, China
Xu Tian: School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan 430070, China
Krishna Bhakta Duwal: School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan 430070, China

Sustainability, 2023, vol. 15, issue 8, 1-11

Abstract: To improve the quality of sloping soil in farmlands, exploring the mechanism of farmland soil consolidation is vital. This study investigated the improvement of soil pH, exchangeable acid, crop economic characteristics, and the soil compression index under different soil amendments using field experiments and laboratory-simulated cultures. The results show that (1) increasing the pre-consolidation pressure of the soil and reducing the soil compression index and bulk density significantly reduces the risk of soil compaction; (2) soil compression performance improved after the addition of organic and bio-carbon fertilizers and other modifiers to the compacted soil. The comprehensive physical index compression curve (S) value was higher than 0.05; (3) the addition (biomass carbon + chitosan 32 t/hm 2 ) had the best improvement effect, which significantly increased soil pH, reduced soil exchange acid, and prevented the dissolution of soil H + and Al 3+ . Dissolution also reduced the risk of soil compaction stress in rice and significantly increased root thickening and yield. Based on the stagnation mechanism of farmland soil and the improvement principle of physical properties, a comprehensive improvement technology for farmland soil compaction is proposed.

Keywords: farmland; mechanism of soil compaction; physical properties; soil improvement (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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