Effects of Different Intercropping Methods on Soil Organic Carbon and Aggregate Stability in Sugarcane Field
Lening Hu 1,2,3,4
Ke Li 5
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Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University & College of Environment and Resources, Guangxi Normal University, Guilin 541004, China
Key Laboratory of Karst Dynamics, MNR&GZAR, Institute of Karst Geology, CAGS, Guilin 541004, China
CAS Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Changsha 410000, China
Key Laboratory of Geospatial Technology for Middle and Lower Yellow River Regions (Henan University), Ministry of Education, Kaifeng 475000, China
College of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004, China
Agricultural Resources and Environment Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
Huiping Ou   

Agricultural Resources and Environment Research Institute, Guangxi Academy of Agricultural Sciences, China
Submission date: 2021-09-25
Final revision date: 2022-03-05
Acceptance date: 2022-03-07
Online publication date: 2022-05-30
Publication date: 2022-07-12
Pol. J. Environ. Stud. 2022;31(4):3587–3596
In order to maintain soil stability, improve soil productivity and optimize planting patterns, the distribution characteristics of soil aggregates in sugarcane fields under different intercropping methods were studied. We investigated the differences in organic carbon content of different particle size aggregates and the effects of intercropping on soil organic carbon, aggregates stability, sugarcane water content and nutrients content. The results showed that intercropping could effectively improve soil physicochemical properties, increase soil organic carbon (SOC) content, but such an approach had little effect on soil stability. After intercropping, the content of SOC, readily oxidized organic carbon (ROC), dissolved organic carbon (DOC) in soil increased significantly. The content of SOC increased with the decrease in aggregate size, and the organic carbon is more stable in the aggregates with the particle size of R>2 mm and R<0.154 mm. The selection of soybean and mucuna pruriens as intercropping crops in both OS//M and OM treatments was less damaging to soil stability and soil performance was significantly improved than the other groups, making them more suitable for intercropping in sugarcane fields. Intercropping increased the water content and N, P and K content of sugarcane plants.